Elysia clarki

Solar-Powered Sea Slugs and Survival in Future Seas

These Florida mollusks make off with chloroplasts from algae and cleverly photosynthesize them for their own nutrition.
Black-Tip Reef Sharks in shallow water lagoon, Fakarava, Tahiti

Sharks Are Hiding from Scientists in Plain Sight—Almost

Marine biologists need to count sharks to save them, but the common practice of using video cameras to record populations could be improved.
Bathymetrical Chart of the Oceans showing the Deeps According to Sir John Murray, 1912

Wait, There’s Noise Pollution at the Bottom of the Ocean?

Anthropogenic sounds have made it all the way down into the deepest place on Earth—Challenger Deep, in the Mariana Trench.
An octopus

Stuck in the Midden with You

A midden is, among other things, a refuse site outside an octopus' home. (Release the Køkkenmødding!)
Lou-seal being released

The Seal That Flew 1000 Miles To Get Home

Found stranded on a subtropical beach, the mystery seal finally comes home to its North Atlantic waters.
Source: https://commons.wikimedia.org/wiki/File:Argonauta_argo_Merculiano.jpg

Paper Nautilus, Octopus of the Open Sea

Why the argonaut, or paper nautilus, may be your new favorite cephalopod.
A cluster of deep sea octopus Muusoctopus robustus.

The Last Vigil of the Octopus Parent

For some species of octopus, reproducing is a lonely act that ends in death.
Coral conservationist Ruth Gates

Remembering Coral Conservationist Ruth Gates

Dr. Ruth Gates worked tirelessly to conserve coral reefs, promoting a controversial idea called assisted evolution.
sargassum seaweed dumped on beach

The Great Seaweed Invasion

In the Caribbean, sargassum deposits have grown to unprecedented sizes, obscuring the sand and turning nearshore waters into seething sargassum soup.
Scuba diver on shipwreck

Do Artificial Reefs Work?

Some authorities are trying to create fish habitats by cleaning old structures and dumping them at sea. But do these artificial reefs really work?