Born out of a Dementian Placebo effect tested to directly attack one's Homeostasis on a genetic level, the aquatic creature eventually broke free of their master's rule and went on to establish worldwide dominance of the seas. It has the uncanny ability to use the aquatic part of it's being as a land vessel in the form of the taur, freal creature or anthropomorphic resident. This ability was to be exploited against the forming conglomerate but the containment failure of the species led to the project's ultimate failure and the unleashing of the Marmortids

They don't normally prey on their land based counterparts of any sorts, but conflict among the groups is common, given that the more foreboding of the ocean faring land creatures are those who exploit the sea. There are those however who are now capable of sympathy in thanks to their freedom. Males and Female Marmotids are known to exist. Due to their more cryptic Origin, of which they will always retain, an attack on naval vessels commercial fishing ships, and civilian water faring vessels are generally known to bear no survivors which includes Women with child, and children themeselves.

Ingestion Methods vary on the individual Marmortids but lethality is within all of them (soft or hard), and given the direct connection to natural entropy, one's soul ifpresent can also be ingested and destroyed.

Age span: 500 years

Marmortids(Mermaid form)- Ocean or fresh water viable,length varies, tails/fins enlongated,repurposed into taur parts when on land, Dementia Related, Diminuinistic sorcery can be used in place of Poison, Fire, or Water. Scales slick, can swim through saturated land(i.e. Quicksand, Bogs, Swamps.) Eyes are Translucent in Darker areas to attract light. Bioilluminescent. Mucus on Scales and Insides make them sticky/icky. Hardened carbon fiber expulsion chemicals allow for reach of Incredible diving depths.  Predator and Prey. Vunerable to Extreme heat/ oxidized cold. Spongy stomach is elongated spreading from the mid anthro to the fish part, pushing liver back to regular function as a filter and not a storage area. Stomach releases aerosol particles that kill skin tissue and muscle cells and churns the victim around tenderizing them, after which the stomach then crushes the now tenderized victim while filling itself with digestive fluid. stomach capicity is 1 taur for both. Known to wear clothes to deceive.

Marmortids(Taur form)- Single stomach in feral abdomen Crushes and digest prey through contractions, Liver used as substitute storage stomach of sorts; Bile used to cleanse food of impurities, not lethal, but may cause irritance. Liver Capicity is one taur, Stomach Capacity is 2 Dragons.  Magic can be diminuative, Poison, Water, or Earth. Eyes are Translucent in Darker areas to attract light. Mucus on Insides make them sticky/icky. High altitudes scathe the lungs. Predator and Prey. Vunerable to extreme heat. Oxidized cold depends on species. Skin and fur Hydrophilic to retain maximum amount of water possible. Can remain out of water for periods of 1-4 days before needing to be resubmerged or drink fluid.

Marmortids(Anthro)- Bi pedal, one stomach or more if counterpart sports them, looks that of a land based mer counterpart to deceive. Weaknesses from respective species apply. Stomach retains crushing nature.

Marmortids(Feral)- looks of land counterparts, one stomach unless land counterparts posses multiple. Weaknesses from respective species apply. 

Multiple stomachs play different roles throught phases after predation.

If only one stomach is present, simple Digestion, via aid from crushing nature.

2: One cleanses and holds, the second one breaks down

3: First Cleanses, Second elimates any overlying skin, third breaks down

4: First cleanses, Second tenderises outer skin, third one chips away outer skin, fourth one breaks down. 

The ability of the Marmortid also almost completely resembles that of a Novaganastro, only underlying difference is within brain signal emination. Marmortids however, unlike Novaganastros:

1. Have an aquatic form  
2. Can fluctuate emination to lower levels.

Novaganastro's usually do not have much power or much skill with it, so it is the only keen certifier for discovering Marmotids among the population. Given the Marmortids skill with power compared to their counterparts however, no effective testing method has been derived. DNA is irrelevant due to the changing nature of a Marmortids physiology, so catching a Marmotid so far has been limited to catching them in malevolent act.