Koala and Curlew, two endangered female North Atlantic right whales have gone off course, perplexing researchers.

Two female right whales traveled across the U.S. Gulf coast during the winter which is rare for the endangered whales, according to researchers.

After a 38-foot-long female gray whale washed ashore at Dockweiler Beach, scientists look for a cause of death: 'Each mortality has a story to tell.' ...

A pair of highly endangered whales seen swimming the Gulf this week have Texas experts on high alert. The two adult female North Atlantic right whales, named Koala and Curlew, were recently sighted in ...