Scientists Unveil Enigmatic New Deep-Sea Sea Slug Species

Researchers have discovered a new species of deep-sea nudibranch, Bathydevius caudactylus, which uses a jelly-like hood to catch prey and glows to deter predators. This bioluminescent sea slug, found at depths of 3,300 to 13,100 feet, is unique for living in the water column rather than on the seafloor. Its distinct features led to the creation of a new family, Bathydevius. The species' feeding method resembles a Venus fly trap, and it exhibits convergent evolution with other marine creatures. The discovery was published after 20 years of research by MBARI scientists.