Today's Catch

Nuclear bomb in Bikini Atoll

Nuclear Bombs on the Coral Reef

On March 1, 1954, the United States military tested nuclear bombs in the ocean around Bikini Atoll in the Pacific Ocean to see what kind of damage they would do to ships. The largest explosion was set off 90 feet underwater: nicknamed "Castle Bravo...

Coral Comeback

Diverse and beautiful, coral reefs have been in the ocean for almost 500 million years. They only make up one-tenth of one percent of the ocean floor, yet up to 25 percent of marine creatures rely on coral reefs for survival. They form the basis of...
The spanish dancer is one of the largest species and best swimmers of the nudibranchs.

The Spanish Dancer

The Spanish dancer is one of the largest species and best swimmers of the nudibranchs. Nudibranchs are mollusks who don't have shells in their adult stage. When the Spanish dancer swims, the wide edges of its mantle (the parapodia) are pushed...
Sea Turtle

Green Sea Turtle

A diet of algae and seagrasses gives this turtle ( Chelonia mydas ) greenish colored fat—and its name. Weighing as much as 500 pounds, the threatened green sea turtle lives its life at sea, with only females coming to shore to lay eggs. See a...
Nine small invertebrates held on two fingers.

A Handful of Biodiversity

Fitting nine of anything on two fingers is impressive. These mollusks and echinoderms are a teeny-tiny sample of the ocean's biodiversity. The Census of Marine Life estimates that there are at least one million species of plants and animals in the...

Anemone Feeding Time

Anemones are known for serving as homes for Nemo and countless other small fish and invertebrates. But these Cnidarians (in the same phylum as jellyfish and same class as corals ) have a long journey before they end up permanently stuck to a rock...
The blue lined octopus can be deadly, so it is best to stay away.

The Dangerous Blue Octopus

The blue-lined octopus may be small, growing to at most 15 cm, but it can be deadly: its venom can cause breathing failure in humans as well as other animals. Turtles can accidentally consume the octopus when grazing and drown due to the...
Census researchers discovered this sea cucumber (Enypniastes sp.) in the Gulf of Mexico.

Transparent Sea Cucumber

Census of Marine Life researchers discovered this unusual transparent sea cucumber ( Enypniastes sp.) in the Gulf of Mexico at 2,750 meters depth. It creeps forward on its tentacles pretty slowly, at around 2 centimeters per minute, while sweeping...
Bottlenose dolphin pod

Bottlenose Dolphin Pod

Bottlenose dolphins ( Tursiops truncatus ) are very social animals, and often travel and hunt in groups called pods. The most common is a nursery group of 5-20 dolphins made up of females and their calves—although occasionally they will gather in...
Close-up photograph of an arrow squid embryo.

Squid Embryo

Smaller than the head of a pin, this arrow squid (Doryteuthis plei ) embryo looks like a miniature adult and is almost ready to hatch! Depending on the squid species, the development from a fertilized egg to a nearly-hatched larva can take one or...

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