Giant manta rays, dolphin encounters, and rainbow reefs await in Hawaii's best snorkeling spots. Dive into paradise with our ...

A remarkable discovery of ancient fish fossils has revealed a chilling and unusual pattern: Tharsis, a now-extinct genus of ray-finned fish, may have met its end in the same tragic way. Analysis of ...

In a river of western Brazil, an “armored” creature with bumpy lips swam through the “dark tea-colored” waters. Something about it caught the attention of nearby scientists — and for good reason. It ...

To mark Shark and Ray Awareness Day this weekend, Shedd Aquarium is introducing Chicagoans to two rare residents — bowmouth ...