Marine biologists have found a new sea slug that is right at home in the ocean’s deep and dark midnight zone. With a large, gelatinous hood, tail like a paddle, and bright bioluminescence Bathydevius caudactylus is so unique that it belongs to a whole new family of sea slugs.

Monterey Bay Aquarium Research Institute scientists have discovered Bathydevius caudactylus, a new species of glowing sea slug that lives deep in the ocean.