In 2018, a study made headlines when it found that a captive orca, or killer whale, was able to imitate human speech. The whale, called Wikie, lived at the Marineland Aquarium in Antibes, France.

Imagine hearing a killer whale say "hello" or "bye-bye"—it sounds like a scene from a sci-fi movie, but this phenomenon is backed by science. A 2018 study has revealed that orcas, one of the ocean's ...

Orcas display a variety of skills, like coordinated hunting and regional ‘dialects.’ They have also revealed several interesting habits, like grooming each other with kelp and offering food to humans.