Cuttlefish

The Cuttlefish is an enemy that spawns in the 1st, 2nd and 3rd layers of the Abyss. It stays invisible on the ground, waiting for the player to come near and attack them. Unlike most Abyss enemies, it does not become passive again even if the player didn't hit it.

Trivia

 * The behavior of the Cuttlefish shares many similarities with its real-life counterpart; both hide with camouflage in an attempt to sneak up on their prey.