Skates and rays

X-ray image of a winghead shark

X-Rays of Fish Reveal Diversity

Scientists in the Division of Fishes at the Smithsonian's National Museum of Natural History use X-ray imaging to study the complex bone structure and diversity of fish. This image gallery showcases X-ray images of...
A whale shark swims with a diver off the coast of East Africa.

The Big Five of the Ocean: Exploring the Waters of East Africa

A whale shark swims with a diver off the coast of East Africa. Credit: Caine Delacy When we think "Africa," we think of the "Big Five"—lions, elephants, leopards, buffalo and rhinos—that crisscross the African...

Sharks

There are more than 500 species of sharks swimming in the world’s ocean. Yet when most people think of these cartilaginous fish, a single image comes to mind: a large, sharp-toothed and scary beast...

Ashmore Reef highlights

The sharks and rays of Ashmore Reef in North West Australia visit baited remote underwater videos (BRUVs) as part of the Global FinPrint project.
Giant Pacific Manta Ray, Roca Partida Sea Mount, Revillagigedos Islands, Mexico

Tagging and Tracking Animals Underwater

“Manta rays sometimes approach divers; an up-close encounter with such a huge, peaceful animal is unforgettable!” -- Nature's Best photographer, Deborah Smrekar. Equipment Used to Capture the Shot: Nikon D70; 12-24mm; 1/100 sec at...