Dolphins have lived near Rome for at least 2,000 years. Scientists fear for their future. Rome's dolphins have an unusually ...

The whales use quick body movements to tear pieces of bull kelp for use as tools, perhaps the first known toolmaking by a marine mammal.

Dolphins can identify their friends by taste, study shows for the first time. The marine mammals use several cues, including unique whistles, to form a complex awareness of others in their minds.

Boaters off the coast of California got the chance to see the biggest animal on Earth and the group is calling it a "once in ...