Vicious, pack-hunting predator. 94% muscle, 4% connective tissue, 2% brain. Indiscriminate when hungry. Almost always hungry. 1. Specialized Olfactory Antenna: Employed in detection of bodily fluids in the water at impressive range.
2. Secondary Pair of Eyes: Likely dedicated to detecting the peripheral movement of larger predators, and hungry members of its own species.
3. Overdeveloped Tail Fin: Favors out-pacing and outnumbering their prey over individual maneuverability. Calculations suggest creatures up to 100x the biter's body weight could succumb to a focused assault by a pack of ten. Assessment: Avoid packs - Try not to bleed