Today's Catch

This female hyperiid (Phronima sedentaria), a type of marine crustacean, is surrounded by her young inside the hollowed out barrel-shaped body cavity of a salp.

Extreme Parenting

This female hyperiid ( Phronima sedentaria ), a type of marine crustacean, is surrounded by her young inside the hollowed out barrel-shaped body cavity of a salp. The mother Phronima presumably captures and kills the salp to build her nursery and...
A wave curls near the shore.

The Importance of a Wave

Large waves are a draw for surfers, scientists and spectators alike to locations around the world. Changes to the coast and ocean floor as well as sediment flow can change the nature of a wave as it reaches shore. So when three condos were going to...

Protected Pigfish and Mao-Mao School

Red Pigfish ( Bodianus unimaculatus ) and Blue Mao-Mao ( Scorpis violacea ) school at the edge of a cavern in New Zealand's Poor Knights Islands. Read photographer Brian Skerry's story behind this photo on the Ocean Portal blog.

ARMS Deployment from a Submarine

Submarine pilot Bruce Brandt secures ARMS (Autonomous Reef Monitoring Structures) to the submersible Curasub off the coast of Curacao. In shallow water, SCUBA divers can place these biodiversity-measuring structures on the seafloor by hand -- but in...
Spiral-tufted bryozoan

A Bryozoan's Medical Endosymbiont

The spiral-tufted bryozoan ( Bugula neritina ) is being studied for a potential Alzheimer's disease and cancer drug—but it's not the bryozoan that makes the chemical. The chemical, found in the bryozoan's tissues, is produced by its bacterial...

Curious Bohar

The twin-spot snapper ( Lutjanus bohar ) is one of the more curious predators in the central Pacific, says marine ecologist Stuart Sandin of the Scripps Institution of Oceanography. "It poses commonly for the camera but is also immediately on-hand...

Pink Coralline Algae

Many species of pink coralline algae cover a reef surface in the Southern Line Islands. Often unnoticed, these pink algae crusts help to cement coral reefs together, providing extra support and habitat for animals that live on reefs. Unhealthy coral...

Emperor Penguins on the Ice

Standing at twice the height of the Adélie penguins, emperor penguins are the largest of the penguin species and can grow to be 100 pounds. This species breeds directly on the ice: a female lays her one egg and then passes it to the male to protect...
Color illustration of an ancient bivalve.

Elevator Rudists

These "elevator" rudists, an ancient bivalve, used one long heavy valve to anchor themselves in the sediment. They used their tentacles (shown here in pink) to filter food from the sea water. And many often grew together to form early reefs. Learn...

Hitchhiking Seahorses

Seahorses are hitchhikers. They can travel long distances across the ocean—farther than they can swim—by attaching themselves to floating seaweed and debris. Read 10 more facts you never knew about seahorses .

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