Today's Catch

A bull shark's ability to prey on many different species is helped by its capacity to survive in both freshwater and saltwater.

Swinging for Bull Sharks

Bull sharks cut a threatening figure with the largest recorded bull shark reaching 11.5 feet and 500 pounds. They prey on dolphins, birds, turtles, bony fish, and other species of shark. Catching such a wide array of prey is possible because bull...

Smasher Mantis Shrimp

A smasher mantis shrimp came out from its burrow on a fringing reef adjacent to the USS Liberty ship wreck in Tulamben, Bali, Indonesia at a depth of 6 meters. The smashers use their raptorial claw to break their food, like clams. Mantis shrimps...

Ideas for Change

"We too are sea creatures," entreats ocean explorer Sylvia Earle in this beautiful short film, which calls for protecting the ocean and, in particular, for ending destructive fishing practices. It's estimated that we've lost on the order of 90% of...
Sunset over a fishing net.

Technology and Sea Turtles

Sea turtles may have survived the planetary changes that killed the dinosaurs, but now they are threatened by fisheries. It's estimated that some 4,600 sea turtles are killed by fishing nets and hooks every year in U.S. waters. But off the coast of...

Sea Ice in its Ever-Changing Forms

For two months, Cassandra Brooks , a marine scientist with Stanford University, travelled on an ice-breaking ship through the Ross Sea in the Antarctica—and she filmed the whole thing. A camera hooked to the front of the ship recorded the ship’s...
When it comes to many of our once-favorite seafoods, there aren't always plenty more fish in the sea. In fact, some studies estimate that up to 90 percent of large predatory fish have disappeared since humans began heavy fishing.

Be a Picky Eater

When it comes to many of our once-favorite seafoods, there aren't always plenty more fish in the sea. In fact, some studies estimate that up to 90 percent of large predatory fish (those that eat other animals—and usually end up on our dinner plates...
Two Adélie penguins face each other while lying on ice.

Adélie Penguins Face Off

These cute Adélie penguins ( Pygoscelis adeliae ) are actually having a bit of a spat. In the spring (October for them), the penguins form breeding colonies on rocky coasts with thousands of birds in a g.roup. Krill, a tiny crustacean, is the...
A school of Hawaiian squirrelfish.

A School of Hawaiian Squirrelfish

Check out the eyes on these Hawaiian squirrelfish ( Sargocentron xantherythrum )! Because squirrelfish are almost entirely nocturnal, they need big eyes to absorb as much moonlight and starlight as they can in the dark. During the day, they hide out...

Grey Reef Shark, West New Britain, Father Reefs, Papua New Guinea

Gray reef sharks ( Carcharhinus amblyrhynchos ) are known for being active at night. They are considered Near Threatened by the IUCN Red List due to fishing and the loss of their coral reef habitat. The sinister animal, with its sleek body, can be...
Many medicines were based on a chemical from the sea sponge Tectitethya crypta.

From Sea Sponge to HIV Medicine

Tectitethya crypta (formerly known as Cryptotheca crypta ) is a large, shallow-water sponge found in the Caribbean. It was first studied for medical purposes in the 1950s when few scientists or doctors thought to look for medicines in the ocean. But...

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