Creature -

Deep-sea organisms have evolved extraordinary adaptations to survive extreme pressure, near-freezing temperatures, and absolute darkness.

In entertainment, a "Creature Feature" (or monster movie) focuses on characters struggling to survive attacks by antagonistic monsters. Creature feature: Ctenophores Creature

: Not a predator, it consumes "marine snow" (organic detritus) using retractable filaments. and absolute darkness. In entertainment