After consulting with federal authorities, rescuers decided the most humane course of action was to euthanize the animal.

On a cold January day I was surrounded by hundreds of black-and-white killer whales—Orcinus orca, not a whale but rather the largest dolphin ... or fight them or chase them away.

Despite being called 'killer whales,' orcas are not whales but the largest species of oceanic dolphins ... allows them to work together to herd, chase, and overwhelm prey, such as schools of ...

Scientists in 2018 discovered that killer whales could mimic simple human speech patterns, and people were shocked to hear the eerie recording.