A well-known male killer whale was spotted June 9 traveling alone through Yaquina Bay and along the central Oregon coast, drawing attention from researchers, photographers and onlookers as he hunted ...

Old Thom has been spotted again. A lone killer whale was seen this weekend in a rare orca sighting off the coast of Massachusetts. Donna Piraino was fishing for tuna Sunday afternoon in the Stellwagen ...

A team of marine biologists are investigating the mysterious mass stranding of orcas in Argentina, after 26 killer whales were found on the beach with no signs of injury or trauma. Specialists at the ...

Killer whales have been caught on video breaking off pieces of seaweed to rub and groom each other, scientists announced Monday, in what they said is the first evidence of marine mammals making their ...