An aquatic marathon

Leaning back against the boat's railing, Littlefoot gave a contented sigh, letting his huge belly hang down his naked body, it reaching all the way to his knees. Ozzy and Strut had invited him out on this boat trip a couple miles from shore to prove that they'd changed since the last time they'd met, and so far, it seemed like they really had! They'd even offered him a substantial amount of food, and him accepting it was part of the reason for his belly's size at the moment (though it was mostly because he was just really fat).
After a couple minutes of relaxing, Ozzy came up to Littlefoot, leaning on the railing on Littlefoot's left. "Still having a good time out here?"
"Yep, just resting a bit. Gotta say, I really appreciate you guys going out of your way for me like this, today's been great! Where's Strut? I want him to hear this, too."
Strut was currently hiding nearby, listening in and waiting for a signal from Ozzy. The two hadn't actually changed, and had lured Littlefoot out here to get rid of him once and for all, by taking advantage of a certain weakness of his...
"Ah, don't worry about it, I'll tell him about this in a minute. Speaking of Strut, him and I are gonna go swimming for a bit, you should join us!"
"You know I can't swim! Even with a life jacket, I can barely even stay at the surface. Besides," Littlefoot put a hand on his belly, "Gotta wait 30 minutes after eating, right?"
"Oh, please, I insist!"
That was the signal. Strut jumped out from his hiding spot and rushed toward Littlefoot, whom Ozzy grabbed onto to hold in place. "What are you- L-let go!"
"Get his legs, Strut!"
"Right!"
Littlefoot fought back, but Strut managed to get a grip on him before long. "If this is just some weird joke, stop it! You're freaking me out!"
Ozzy and Strut struggled to lift Littlefoot up. "You're...gh...Going for a dive, you...Fffriggin fatass!" Strut managed to say, needing a ton of effort to hold up the fat dino.
"No, NO! PUT ME DOWN!"
With a grin, and Littlefoot already over the railing, Ozzy said "Alright then!", and let go. Littlefoot dropped onto the railing and slipped toward the water, also causing Strut to lose his grip. There wasn't a splash, though, as Littlefoot just barely managed to grab the edge of the boat and keep from falling into the water, looking up at the others with terror in his eyes. He tried to pull himself up, but barely managed to get any height at all before dropping back down. "H-HELP! GET ME UP!"
Kneeling down in front of him, Strut laughed. "My god, man, you're so out of shape you can't even pull yourself up!" Littlefoot frantically looked around for anything that could help, knowing that Ozzy and Strut certainly wouldn't, but there was nothing.
"Care to do the honors, Ozzy?" Strut motioned to Littlefoot's hands.
"Damn right." Ozzy stomped on one of Littlefoot's hands, causing it to be instinctively pulled back. Then, Littlefoot's new lack of grip made his other hand start slipping off the edge. He tried to recover, but it was already too late, and he started falling toward the water!
"HUUUAAP!"
SPLASH!
Just after taking the deepest breath he could, Littlefoot sank under the water, not able to stay at the surface for even a moment. Strut happily shouted, "Hell yeah, we got him!", and went to high-five Ozzy, who ignored the offer, just looking down at where Littlefoot had fallen and smiling. "You know what? I'm gonna go down and mess with him for a while. Wait here." Hopping over the railing, Ozzy held his breath and dove into the water, leaving Strut on his own. "...We agreed we'd just go back after, though...", he grumbled.

Still sinking, Littlefoot thrashed around, hoping that maybe he'd somehow suddenly learn to swim or something, but it barely even slowed his descent. The water started to feel a bit chilly as the pressure gradually increased, before he finally reached the bottom, landing on his butt and stirring up some sand around him. This far down, the surface was almost out of view, and Littlefoot could only barely see the underside of the boat he'd fallen from. Quickly getting to his feet, he jumped a few times in desperation, only getting a couple feet off the ground each time. That obviously wasn't going to work, so he looked at his surroundings...
He'd landed in a reef, a variety of different fish swimming about nearby, and had the circumstances been different, he would've quite enjoyed exploring for a while. That wasn't an option now, though, but then something occurred to him. When he was back on the boat, holding onto the edge and looking around, he'd seen what direction the shore was in, and could tell what way it was now by looking up at the boat. After using that to figure out which way to go, Littlefoot hefted up his belly and glubbed between his basketball-sized cheeks, "Gubless I'bld bebltteblr geblt gobling..." Being able to hold his breath for an absurdly long time, it wasn't actually too unrealistic for him to be able to walk all the way back to shore before he'd drown. He hadn't gotten time to properly prepare himself, but he guessed he had about 40 minutes, down from his record of just over an hour, until he'd be forced to inhale.
As Littlefoot started to walk, though, he heard bubbling above him. "Hbley, dublmbablss! Ublp hblere!" Looking up, he saw Ozzy swimming down toward him. He growled a bit, then resumed walking. Before long, Ozzy was swimming next to Littlefoot with puffed cheeks and a smug expression, and starting to taunt him. "Ibl dibldn't thblink yoblu weblre thblis babld ablt swblimmblng, yoblu cabln't evblen geblt ofblf thble grblounbld, cabln yoblu?" Littlefoot tried to ignore him for now, focusing on just walking ahead, causing Ozzy to redouble his efforts to be annoying. "Hblellbloooblo! Pably atbltenbltiobln tblo mble!", he bubbled, poking at Littlefoot's cheeks a bit before having his hand swatted away.
"Shblut ublp. Sablvinblg brbleatblh."
"Thblere wble gblo! Sblo, whblere arble wble gobling?"
"Thble shblore. Ibl cabln mablke iblt."
"Seblriobluslbly? Webl're mibles oublt, yoblu reblallbly thblink yoblu cabln publl thblat ofblf?"
"Yoblu're noblt giblvinblg mble mublch chbloicble."
"Dablmn... Hbley, iblf yoblu're sablvinblg yoblur brbleatblh, hblow coblme yoblu're tablkinblg sblo mublch?"
"...Mmrh..." Littlefoot covered his mouth. All that had probably cost him a minute or so.
Ozzy let out a burbly laugh, before quickly closing his mouth and puffing his cheeks a little further, chest subtly contracting. "Hbl-hblang obln, gobltta brbleatblhe. Yoblu oublght tblo hblead ublp toblo... Oblh, wablit, yoblu cabln't! Hblahbla!" Then, he took off for the distant surface. Littlefoot looked up and watched Ozzy for a moment, then continued on his aquatic path.
In contrast to the reef he was leaving behind, the area up ahead didn't seem to have a whole lot going on in it, no fish to be seen and just some rocks strewn about in the sand. He let his mind wander as he idly walked onward, wondering what Ozzy and Strut might be up to right now.

"Huuaaa!" Ozzy gasped hard as he surfaced. He hadn't noticed on the way down just how deep this part of the ocean was, it took him almost a minute and a half to go all the way down or up, and he'd started getting a purple blush a few seconds before surfacing. Looking over at the boat, Ozzy sighed and started swimming over to it, knowing that trying to get Strut's attention from this distance would be pointless. A minute passed, and Strut was finally visible on the boat, nervously looking about to try to find Ozzy, who called out to him. "Hey! Get the boat over here!" Strut looked over and sighed in relief, then started up the boat's engine and piloted it over to Ozzy. "Why'd you stay down there so long? I was getting worried about you!"
Ozzy ignored his concern. "That maniac thinks he can walk all the way to the shore on one breath!"
"Woah, really? I'd heard he was amazing at holding his breath, but damn..."
"Stay up here, and keep the boat going fairly slow to the shore. I'm gonna head back down. Huuuup!" With another deep breath, Ozzy dove under the surface again. Strut sighed, and did as he'd been told.

Littlefoot was still walking, now plugging his nostrils in the hope that Ozzy wouldn't be able to find him without bubbles giving him away. 10 minutes had passed since he'd fallen down here, and he was finally feeling the urge to breathe, belly twitching every now and then as his cheeks expanded. Unfortunately, in such a featureless area, Ozzy didn't have much trouble tracking him down, regardless of the lack of bubbles. "Thblere yoblu arble! Whbly dibldn't yoblu wablit foblr mble?", he joked.
"Ugblh, leblave mble alblone!" Littlefoot tried to awkwardly run away, though barely got any more speed than by just walking, and Ozzy could fairly easily keep up.
"Wablkinblg's neblver fablsteblr thblan swblimmbling doblwn hblere, stblupibld!"
Littlefoot held back a defeated sigh, and resolved to just try harder to ignore Ozzy this time.

A couple minutes passed, and despite starting to badly need air, Ozzy was absolutely determined to be annoying to Littlefoot, poking at him all over. Finally, though, he was forced to give up on it, curling inward and covering his mouth as the purple blush he'd gotten started to transition to being blue. Littlefoot, too, was starting to blush from the strain of holding his breath so long, though his blush was a normal one for now. After a couple seconds, Ozzy started to swim up, keeping a hand on his mouth as he did. Littlefoot was relieved to be alone again, with a slight smile between his 2-foot cheeks for a moment, before his expression faded back into determination and slight fear as he pressed onward.

A distance above, Ozzy continued his struggle, his blue blush slowly spreading across his face as he started losing air in bursts of bubbles. Loud whines followed each heavy contraction of his chest, his lips quivering...
"Hlp-ulp!" He couldn't stop himself from sucking in, but managed to swallow the salty water instead of inhaling it. It wasn't much farther to reach the surface, though...
"Ulp, glp! Urglp!"
Splash, "GHUUAAA!" At last, he'd made it. Floundering as he struggled to stay on the surface, gasping heavily, it was only a few seconds before Strut grabbed his hand. "It's alright, I've got you!" Ozzy was hauled onto the boat in a heap, still panting as his blue blush faded to purple, then disappeared.
"Be more careful, you're gonna drown yourself!" Strut's concern for Ozzy just got him a glare in return.
"I'll be fine, you moron. Just gotta... Catch my breath for a bit..."

20 minutes, now, Littlefoot had been underwater, and his lack of air was becoming more obvious. His chest would heave every few seconds, with little grunts following behind each one as he plugged his nostrils again, this time not just to hopefully keep Ozzy from finding him.
Finally, something interesting became visible in the distance: A kelp forest. Despite the danger he was in, Littlefoot had actually been getting a bit bored, just walking across the barren seafloor for minutes on end without anything happening, so he appreciated the change. Though, that feeling didn't last long; as he started to walk into it, he almost immediately got an arm tangled in the kelp. Freeing it, he nervously stepped back. This wasn't ordinary kelp; it was binding kelp. It looked almost identical to traditional kelp, and seemed to have a mind of its own, quickly wrapping around anything that touched it with more force than a slight brush, sometimes needing quite a bit of effort to be removed. Even though going around would take a fair bit longer than going straight through, Littlefoot wasn't about to risk getting caught in there and wasting even more time. Looking side to side, the binding kelp continued for as far as he could see, so he decided to just go left along the edge, hoping to eventually be able to go around.
A minute passed, and with there still being no sign of the forest stopping, Littlefoot decided that carefully working past the binding kelp would likely be his best option after all. Slowly, he walked forward, awkwardly angling his body as he did his best to keep from even touching the kelp at all, slightly jolting in fear each time it brushed against him anyway...
"Mmblrbl!?"
A strand of kelp had wrapped around his dick! Even worse, the kelp seemed unsure of its grip, repeatedly loosening and squeezing as if it were masturbating him. Truth be told, it felt quite good, but Littlefoot didn't want any part of it, carefully unwrapping the kelp and releasing it, causing it to simply resume floating in place as if nothing had happened. He needed to be more careful; he'd gotten erect from that, and he could tell that if it happened a few more times, it would make him cum, and he'd never been able to keep quiet during an orgasm.
The minutes passed, Littlefoot making very slow progress and managing to keep everything but his dick from getting grabbed by the kelp, until he could feel a climax building up. Nearing the edge of the kelp forest, Littlefoot got impatient and tried to go a bit faster, but that quickly turned out to be a mistake. He tripped and fell forward, and all his limbs got caught! Panicking, he thrashed around to try to get loose, but just ended up making the situation even worse as another strand ended up grabbing and squeezing his dick yet again.
He wanted so badly to cover his mouth to keep his air in, but could barely move his arms a few inches before they'd be pulled back by the kelp. Arousal building further, Littlefoot soon reached the point of no return, the pleasure in his dick starting to surge as he lowered his head, pressing his chin to his chest as a last resort to maybe keep his mouth closed, trying his best to resist the incoming orgasm.
"Hmb! Mm-mm! MMMMMMMBLBLAULABUBL!"
It was to no avail, and Littlefoot came hard, arching his back and loudly moaning a cloud of bubbles. He thrashed again, cum being sent in several directions, his orgasm lasting a fairly long time as the kelp around his dick kept up its squeezing for a few seconds, after which it seemingly gave up and released him. Recovering his focus, he looked around as his dick weakly spurted a few more times. He was still bound by the kelp, and he knew that trying to struggle out of it would be a waste of effort - and oxygen, which he was getting pretty low on at this point, with about 27 minutes of breath holding passed. Knowing from stories about binding kelp that it would eventually let go given enough time, Littlefoot only really had one option now. Closing his eyes and relaxing as best as he could, he waited.

Where the hell is he? Ozzy thought to himself, sticking his head underwater and looking for Littlefoot. Having taken so long to rest, he'd lost track of them, and was frustrated that he couldn't go back down and bother them some more. Lifting his head up and taking a breath, Ozzy looked back at Strut. "Still no sign of him. Speed us up a bit."
"Aye-aye, captain..." Strut huffed, having no investment whatsoever in Ozzy's troubles.
Ozzy rolled his eyes, then held his breath and looked back into the water. For a while, nothing interesting happened, but Ozzy eventually noticed a large amount of bubbles rising from a kelp forest. There he is... I think. Raising his head again, he called out another order to Strut. "Slow back down, think I found him!"
"Could you please be more careful this time? Please, I don't want to have to drag your drowned body back up here..."
"I'm not gonna drown, don't worry." With that, he dove down once again.

"mm...blbl..." Littlefoot had been waiting 3 minutes, now, and he could feel the kelp's grip loosening, but he didn't dare move yet, knowing that doing that would likely make all this time go to waste. His cheeks had become nearly 4 feet wide, and he'd gotten hard again, this time just from the strain of having been holding his breath for half an hour, his blush now having just the slightest hint of purple in it.
"Foblund yoblu!"
No, not again... Looking up, Littlefoot saw that Ozzy was above him again, waving at him before swimming down to stand in front of him.
"Shblit, thblat's biblndiblng keblp, isbln't iblt? Gubless Ibl'm thble onbly onble hblere whblo knblows noblt tblo meblss wiblth iblt. Anbld Thblat means..." Ozzy started poking at Littlefoot again. "Yoblu cabln't stblop mble frblom dobling thblis!"
"Grblrblrblrbl..." He was right. Littlefoot couldn't risk even the slightest movement, so he just had to put up with Ozzy's torment for now.
It was hard, but he managed it. A couple minutes went by, as Ozzy pushed at Littlefoot's belly to make it jiggle, rubbing his ever-expanding cheeks, and finally the kelp let go.
"Ablh, thblere iblt gobles! Yoblu'd beblst geblt gobling thblere, blblimp-fablce, yoblu're tublrniblng publrplble!"
The two walked together for a bit, Littlefoot noting that he could get a bit more speed because of his lost air reducing his buoyancy, then Ozzy hopped up and started swimming in front of him. "Mabln, thblis ibls SblO mublch bebltteblr thblan wablkinblg! Whbly dobln't yoblu giblve iblt abl shblot?" Littlefoot glared at him. He was starting to lose his temper at this point.
They'd gotten to another barren area, so there was nothing for Littlefoot to look at to distract himself as Ozzy continued, ignoring his lack of air for the moment as he started getting a purple blush.
"Blublublub! Dobl'nt gobltta woblrry mublch abblout aiblr, siblnce Ibl cabln swblim, unblike yoblu, fabltasbls! Yoblu're prbloof thblat fablt reblallbly doblesnbl't flbloat!"
"Shblut ublp..."
"Yoblu're reblallbly toblo trblustbling, iblt wabls sblo eablsy tblo trblick yoblu inblto geblttiblng obln thblat boblat!"
Suddenly, Littlefoot snapped. Noticing that Ozzy had carelessly gotten within reach, he grabbed their leg and pulled them close!
"Obl-oblh shblit, leblt gblo!"
Ignoring him, Littlefoot pinned him down and punched him in the stomach.
"BLRBLGHK-HUUUP!"
Ozzy coughed out a cloud of bubbles, which brushed past Littlefoot's face, and gasped water! He held it in for a moment, shivering heavily, before going into a coughing fit and losing the rest of his air, taking another gasp. Actually noticing it this time, Littlefoot was shocked out of his rage, freezing up as he watched Ozzy choke and get a blue blush, before jumping off him to let him swim up. Their ascent was slow, and not being able to swim himself, Littlefoot couldn't help him, just hoping they could make it on their own as he, regretfully, turned to continue walking.

Ohh, he's taking the longest yet... Strut thought, looking down at the water. H-he told me to stay up here, he might be mad... Damn it, whatever! He shut off the boat's engine and awkwardly climbed onto the railing. He's my brother, I have to make sure he's safe! With a deep breath, he jumped off the boat and into the water. He wasn't as good at swimming or breath holding as Ozzy, but he didn't care right now, heading toward some bubbles that he hoped were the right ones to see what was going on.
"OBL-OZBLZY!" His brother was drowning! Still being quite a distance away, it took about 30 seconds for Strut to reach him, watching his slow flailing come to a stop and a blue tint spread over his now-sinking body. Even this little time underwater was starting to wear on Strut, his cheeks starting to get bigger as he finally reached Ozzy, grabbing him and starting to swim up with him. This close, he could hear Ozzy's weak breaths of water, at least at first, before they stopped. Swimming toward the surface at a glacial pace, Strut started to lose air, getting a purple blush as he held his breath past his previous best time...
And just barely managed to surface before he'd inhale. "HUUUAA!"
"..." Ozzy was fully unconscious, mouth hanging open as some water poured out.
"Ghiih! H-hang on... Hiihh! O-Ozzy!" Strut struggled to climb back onto the boat, dragging Ozzy on with him...

"BLGHK, GHUUAAA! HACH, HUUAA!" After some CPR, Ozzy came to, hacking up all the water he'd inhaled, as Strut sat next to him and patted his back to help get the water out. About a minute later, Ozzy's coughing had pretty much stopped, though his breathing was still shaky.
"Y-you okay, Ozzy?"
"...Did you...hah...C-come after me?"
"You were down for so long, of course I-"
Smack! Ozzy slapped him. "I told you to stay here! I would've been fine, why can't you just listen?"
"WHY CAN'T YOU JUST LISTEN!?"
Stunned by Strut's outburst, Ozzy just stared at him.
"I told YOU to be careful! If I'd listened, you would've died down there, and then you hit me for saving your life!"
"...I...U-um..."
"Oh, it's coming, isn't it? What's it gonna be this time? Gonna try to twist this so it looks like I'm the asshole, or maybe insult me?"
"...I'm sorry..."
Now it was Strut's turn to be stunned. Not a single time in his life had he heard Ozzy apologize and mean it. Tears welled up in Strut's eyes as he wordlessly leaned in to hug Ozzy, who did the same.
Some time later, they broke their hug and Ozzy stood up. "Right... I don't really care about Littlefoot any more. Let's just... Head home. Besides, we should probably bring this boat back to the guy we... 'Borrowed' it from."
"Crap, I totally forgot! Hope they haven't noticed it's gone yet, it's gonna suck if they have."
Ozzy started the engine, and they began their trip back to the shore together.

Littlefoot was thankful that Ozzy's loud gurgling faded as he walked away, though he still felt terrible for not helping, despite not even being able to. Trying to get his mind off that, he looked ahead to see he'd be going through a sort of aquatic valley next, its sides having quite a number of cave openings in them. The few that were big enough for him to fit into (not many, considering that his cheeks were now each about 4 and a half feet wide), he took a quick look in, hoping to find air. After minutes of searching near the entrances of the caves, he finally happened to find a tiny air pocket, which he gasped down all of in one go. It certainly eased his lungs a bit, though it hadn't been worth the time he'd spent looking, and he decided to just press onward instead of wasting any more time.
A shadow briefly passed over Littlefoot, and he was momentarily scared it might be a shark or something, but, looking way up at the surface, he could see Ozzy and Strut's boat heading in the direction of the shore, leaving him behind. From here on, he'd have to just remember what way to go, but at least he didn't have to worry about Ozzy annoying him. He could only hope he hadn't ended up seriously hurting Ozzy...
Minutes later, Littlefoot left the valley, into yet another barren section, then paused and covered his mouth, letting out a muffled whine. He'd been underwater for 40 minutes, the urge to breathe beginning to slowly turn to a burning, his blush turning blue. Clearly his earlier estimate of how long he could last was off by quite a bit, though, having no way to track the time, he didn't know that. Setting off into an awkward jog, he kept a hand on his mouth and tried not to think about the lack of air.
This was the biggest featureless area yet, minutes upon minutes going by as Littlefoot's blue blush started to spread across his face. Eventually, he dropped to his knees and put both hands on his mouth again. 45 minutes, now, and the burning in his lungs had gotten bad enough that he considered just giving up... But, even as a dizziness began to form in his mind, he forced himself to get up and keep walking.
The dizziness slowly intensified, vision blurring as his fingertips started tingling and his face went fully blue. Littlefoot was still aroused, his dick aching, and he couldn't resist jacking off as he walked, leaving a thin trail of bubbles as his exhausted lungs started trying to reject the stale air inside them. It took only a minute before he stopped, both hands on his mouth once again as he moaned (losing much less air this time) and humped at the water, cumming for the second time in this excrutiatingly long dive.
Barely even recognizing the end of his orgasm, Littlefoot went back to walking. A sleepy feeling started to replace the intense dizziness, and while he started to not really register the burning in his chest, his cheeks continued expanding to an even more absurd size. He'd reached 53 whole minutes of breath holding (minus when he'd inhaled the tiny air pocket earlier), and finally found something other than sand; he was coming up on another reef. Stumbling into it as if he were drunk, it wasn't long before a curious fish came up to him, poking at him for a while. Eventually, it swam in front of his face and... Spoke? "Ah, I know what you are, you're one of those dumb land-walkers." Littlefoot's lidded eyes went wide for a moment, before he settled back into his breathless stupor. "...hbl...hblelp...sbl-sblurfblace..."
"Wow, you can't even swim, can you? God, you're pathetic." The fish turned away for a moment. "Hey guys! We got a land-walker here!"
In seconds, Littlefoot was surrounded by a variety of fish, all swimming around to inspect him and talking over each other.
"Have you got pufferfish in your cheeks, or something? You look ridiculous!"
"Look how fat he is, maybe he swallowed a couple, too!"
"You look awfully blue, there! Feel like breathing, dry-walker?"
"Stop trying to make 'dry-walker' happen, moron!"
With so many fish around him, Littlefoot could barely see, and, not wanting to risk losing his bearings, had to just stand there and try to ignore the insults. Before long, though, something he couldn't ignore came up.
"...ssllrrgh..."
"Hey, I think he just inhaled!"
Indeed, he'd sucked in water through his nostrils without noticing, but that fish's comment made him realize.
"HRGH!"
Littlefoot shot back to awareness, and the fish swarming him disappeared. Not that they swam away, but literally vanished, as they and their talking had been hallucinations. Only the first that had inspected him had been real, and even it had quickly deviated from reality. None of that was of concern to Littlefoot right now, and as he felt water sloshing in his lungs, he finally couldn't hold on.
"BLABLRGL, HUUUAAGLRK!"
Nearly an entire hour underwater, and Littlefoot's lungs had had enough. He doubled over, hacking up water just to inhale more. Managing to keep himself standing, however, he staggered forward as he choked, then broke into a run, keeping a hand on his neck. His newfound lack of air anchored him more firmly to the bottom, allowing for the greatest speed yet.
For minutes on end, he ran, his bubbly trail stopping not long after he left the reef, nothing but water in his lungs. Yet another barren area, though this one had quite a number of large rocks and boulders laying about. As his face turned fully blue, Littlefoot gasped another lungful of water, then held it, puffing his cheeks to such a ridiculous degree that they nearly touched the ground!
"Gr-glrgh...Hic! Hicp!" It was a struggle to keep this useless aquatic breath held, and he only managed it for a few seconds before a set of violent hiccups forced him to exhale, resuming desperately panting seawater. Then, a shadow passed over Littlefoot again... This time, it really was a shark! "HR-GARGL!" While he'd heard that most sharks were actually somewhat friendly, instead of just being bloodthirsty monsters, he didn't want to find out whether it was true this way. Frantically looking around, he saw a boulder with a large indentation he could hide in, running toward it and diving in.
Now, most likely safe from the shark, Littlefoot covered his mouth and tried to keep quiet. He certainly wasn't safe from drowning, though, and despite his efforts, he still let out little gurgles and chokes. "...g-gulk...hk, hkkh..." It wasn't long before he started losing his composure, rocking back and forth and kicking about as his choking grew louder. Something would have to be done, before he got loud enough to alert the shark! Noting he'd once again gotten erect, he didn't hesitate to start jacking off, and the pleasure seemed to be a big help with staying quiet. Littlefoot still held a hand over his mouth and rapidly panted through his nostrils, but his gurgling had stopped entirely.
A couple rather enjoyable minutes passed, and as Littlefoot's drowning reached its 10th minute, his panting slowed and his eyelids began to droop, soon even forgetting he was supposed to be hiding. Not bothering to actually go for an orgasm, he crawled out of his tiny cave and struggled to his feet, leaning against the boulder for support, then began to stumble forward. He was sure it was important that he kept walking in a specific direction, though he couldn't remember why any more.
It was taking ages for him to get any real distance, but Littlefoot kept moving, tripping once and taking almost half a minute to get up, then continuing. Soon enough, his waterlogged walk had been going on for another 10 minutes, his body gaining a subtle blue tint. Eventually, he paused, eyes rolling back as he bucked his hips again. Despite not having touched his dick in the such a long time, his drowning was slowly building his arousal anyway, and it just now reached the tipping point, weakly cumming into the water once again. It seemed to have sort of drained the energy from Littlefoot, and he fell to his knees, only barely avoiding passing out. He so badly wanted to just sleep, but still, he had a nagging feeling that he needed to do something. With a sigh and a hiccup, he managed to stand up again and press on.
5 more minutes passed, and another reef - and, in the distance, a slope upward - became visible. Littlefoot weakly smiled and attempted to do a sort of stumbling jog toward the reef, barely getting anywhere before tripping again and slowing back down. Whatever it was that he needed to be doing could wait, he wanted to explore first.
Even with his dim vision, Littlefoot happily looked around, still half-asleep. Once again, a fish came up to him, and he tried to greet them. "...hgh...hhh..." Finding that he didn't have the focus to say anything, he simply gave them a small wave instead. His legs buckled and he fell on his butt, then decided to just sit like that for a while.
Now going on half an hour without the smallest bubble of air in his lungs, he noticed that, off in the distance, a small group of something had become visible, and was moving toward him... Dolphins! Littlefoot smiled again and waved to them. At least, he thought he waved, he didn't seem to be able to feel his arms at the moment.
Not too long later, the 3 dolphins had reached him, and seemed to be interested in him... And, unfortunately, they seemed to be bullies like the earlier hallucinated fish had been. They had something else in common, as well; they weren't real, though Littlefoot couldn't tell this time.
"Pfft, check this idiot out. Sittin' around looking like a dumbass, gulpin' away."
"Where are his gills? How's he breathing?"
"Look at the size of that gut! The hell did he eat, a whale?"
Littlefoot looked down at himself. Indeed, his belly had gotten noticeably bigger, as some swallows had mixed in with his waterbreathing since he'd sat down, slowly bloating him out with seawater. With an amused gurgle, he slightly tilted his head back and took a few gulps, watching his belly expand a little.
"Yeah! Drink up, fatty!"
"Kinda wish my belly could stretch like that, that's hot..."
"You degenerates."
Shuddering, Littlefoot suddenly fell backward as he briefly lost consciousness, waking again a moment later.
"Feeling sleepy, there? I hear you've been underwater about an hour and a half, that's pretty impressive for a land-walker."
"Don't think that means we like you, by the way. You don't belong here."
"Oh, absolutely. I'd drag you out of here myself, but there's no way I'm anywhere near strong enough."
Another momentary lapse of consciousness. Littlefoot could only barely make out what the dolphins were saying at this point.
"Is he even listening? I don't think he's reacted to anything we've said."
"Can he listen at this point? Look at him, he's more blue than the water!"
"Who cares, let's just leave him to drown. Besides, I could use a breath."
One of them said something else, but Littlefoot couldn't tell what it was, and he watched them swim for the distant surface. That word, though, "breath", it felt important...
Suddenly, everything rushed back. His awareness, his memory of the situation, and most of all, the pain in his lungs. He needed air, right now.
"GLUGHK!" Littlefoot shot to his foot and frantically looked around, then bolted for the distant upward slope. He somehow overcame the resistance of water, breaking into a full sprint as each loud, powerful gasp of water seemed deeper than the last. Even once they started filling his lungs to the brim, it felt like they somehow continued for a moment, the excess water flooding into his belly instead. His gait slowly grew more and more clumsy as his energy rapidly drained and his stomach bloated, and as he ascended the slope he started needing to hold up his gut to keep it out of the way.
At last, he neared the surface, but his adrenaline rush had come to an end. He stood still for a moment, only a couple feet underwater, then forced himself to take just a few more steps. Then, finally, finally, the top of Littlefoot's head emerged from the water! Another step, and his face was above the surface... Except, it seemed he'd forgotten how to breathe. Water poured from his mouth and nostrils, then he fell forward, his face returning below the water as he landed on his huge, waterlogged belly, as if it were a small mattress. He could literally feel the wind on his back, but first, he had to remember how to breathe...
"...ghuuhh..." Ah, that was it. Now, he just had to get at least his nostrils into the air...
Except, he couldn't move. No matter how hard he focused his dying mind, he just couldn't will himself to even raise his head the couple inches it would take, twitching about on his gut. For almost a minute, this kept up, but he simply had no strength left, not even enough to breathe the water. Shuddering one last time, Littlefoot's body gave out, passing out once again. He wouldn't awaken, this time.
It seemed the tide had been at its highest, as, over the next 10 or so minutes, it dropped enough that Littlefoot's nostrils were above it. He'd been even closer to safety than he'd thought.