Ctenophores

Encounters with Bioluminescent Creatures

Scientists describe the amazing bioluminescent creatures they encounter as they descend into the deep--siphonophores, ctenophores, and viperfish--in this Smithsonian/History Channel "Deep Ocean Explorers" video excerpt. If you like this video, watch the full 14-minute...
A large ship flushes water from its ballast tanks while at sea

5 Invasive Species You Should Know

A ship flushes and refills its ballast task in mid-ocean to prevent marine organisms from moving from one port to another. Credit: Smithsonian Environmental Research Center Regardless of what continent you live on, the...

A Ctenophore Feeds

The comb jelly (ctenophore) Thalassocalyce inconstans is found in shallow to deep water in the Atlantic Ocean, Mediterranean Sea, and sometimes in warmer Pacific Ocean waters off the coast of California -- although this...

Blackwater Drifting

Some of the most otherworldly animals—like those straight from a science fiction story—can be seen in the open ocean at night. By drifting in the blackwater in a scuba suit just under the surface,...