At birth, beluga whales are 5 feet long, roughly 100 pounds, and dark blue-gray in color. Unmistakable as adults, their color lightens to white, and they have a dorsal ridge rather than a fin. Belugas ...

Whale shark with injury to the dorsal fin, likely to be caused by collision with a vessel. Credit: Gonzalo Araujo ...

Orcas kept in captivity were known to suffer from physical and psychological issues, including developing the hallmark collapsed dorsal fin ... "retired" captive beluga whales, Groves said.

Here’s a summer “staycation” idea: From the comfort of your own home, you can watch—and listen to—tens of thousands of beluga whales ... Instead of a dorsal fin, belugas have a dorsal ...

At birth, beluga whales are 5 feet long, roughly 100 pounds, and dark blue-gray in color. Unmistakable as adults, their color lightens to white, and they have a dorsal ridge rather than a fin. Belugas ...