Experts speculate that orcas may be playing when they ram boats so hard they sink—a phenomenon that’s mostly been documented in this region.

Earlier this month a small ship was attacked and sank by three orcas off the coast of Lisbon, Portugal. The forceful attack ...

Orcas have long been revered for their intelligence, adaptability, and group-hunting strategies. But one scientific review spanning two decades has revealed a little-known, yet intriguing behavior.

Orcas have been known to display an array of anthropomorphic-seeming behaviors, from playing to mourning and even scuttling boats. Now, killer whales have been observed making out in the wild for the ...

Astonishing footage has emerged of killer whales targeting two tourist boats in Portugal this ... while a second vessel ...