A whale watching boat recently spotted a large group of orcas, also called killer whales, off the northern Channel Islands.

Only two places in the world allow tourists to enter the water with the ocean’s apex predator. But the safety of both species is a growing concern.

According to the aquarium, Old Thom is the only orca regularly seen in North Atlantic waters. Unlike most killer whales that swim in pods, Old Thom is known to swim alone or with dolphins in the Gulf ...

Two Los Angeles-area boaters on Saturday spotted a juvenile gray whale that had recently been killed by orcas and was missing most of its head. Alisa Schulman-Janiger, director of the ACS-LA Gray ...

In the serene surface of the Gulf of California, a harrowing spectacle is developing. Near the surface ridden with confusion and gushing blood, a juvenile great white shark struggles. A pod of killer ...

Three orcas that had not previously been recorded in the Seattle area have delighted whale watchers with several visits.