The distinctive greenery between you and your buddy is likely the result of some exuberant biology, a productive party of photosynthetic plant plankton.

Fun facts about the siphonophore: its size, its species, the longest siphonophore on record and more!

it’s difficult to reconcile how the most beautiful things you have ever experienced can be the worst they’ve ever been. But the data is clear—we've lost more than we can imagine.

The *Melibe* nudibranch noticed a crack in the ecological framework to be filled with a body plan just crazy enough that it could work.

A Cabo Pulmo shark encounter becomes so much more when California divers sense the presence of their missing friend.

We experience an different world every time they're below the waves. One diver takes a crack at sharing the experience with landlubbers.