Over 1,500 Risso's dolphins formed a rare super pod off Carmel Bay, California, stunning marine biologists as they stretched for miles, leaping and gliding.

An unusually large cluster of dolphins has been spotted south of Monterey off the central California coast. Marine biologists with Monterey Bay Whale Watch filmed the giant group of Risso’s dolphins, ...

The pod of killer whales that showed up Thursday, Jan. 30, have only been documented about 10 times since 1993.

Monterey Bay Whale Watch said more than 1,500 dolphins were spotted by the company's scouting boat when it went out to perform a survey.