photo

Atolla Jellyfish from the Waters of Japan

This deep-sea jellyfish was caught on film by an ROV east of Izu-Oshina Island, Japan.
JAMSTEC

The ROV Hyper Dolphin caught this deep-sea jelly (Atolla wyvillei) on film east of Izu-Oshina Island, Japan. When attacked, it uses bioluminescence to "scream" for help—an amazing light show known as a burglar alarm display. Visit the Encyclopedia of Life to learn more about these wild jellies.