Tony Wu / Polychaete worm (Syllidae) as pelagic sexually mature worm / epitoke carrying eggs. Hakodate, Hokkaido, Japan. May.

Tony Wu / Polychaete worm (Syllidae) as pelagic sexually mature worm / epitoke carrying eggs, prior to spawning. Hakodate, Hokkaido, Japan. May.

David Fleetham / Phil's octocoral worm (Alcyonosyllis phili) on soft coral, Yap, Micronesia.

Tony Wu / Composite image of various Syllidae polychaete worms that gathered around a light at night in order to prey upon smaller animals that are attracted to the light. These worms were less than 1cm in size...