Most sea slugs use their raspy tongues to feed on prey that is attached to the seafloor. Instead, Bathydevius caudactylus works a bit more like a Venus fly trap. It uses a cavernous hood to trap crustaceans. Some other unrelated deep-sea species–including some jellyfish, tunicates, and anemones–use this feeding strategy.

MBARI researchers have discovered a remarkable new species of sea slug that lives in the deep sea. Bathydevius caudactylus swims through the ocean's midnight zone with a large gelatinous hood and paddle-like tail,

Deep-sea researchers have discovered a glowing sea slug with a huge hood that helps the creature feed like a Venus fly trap.