Blobfish

PSYCHROLUTES MARCIDUS
Lie-in-wait Predator
Up to 30 cm
Has a jelly-like body with soft bones and decompresses to mush if brought to the surface, unable to hold its own structure.
Neutrally buoyant thanks to high fat making it less dense than the water it lives in.
Conserves its energy by waiting for prey.
May live for hundreds of years...