As the crew motored inshore after the encounter, one of the orcas reappeared, chased the boat into the marina and tore off what little fiberglass was left on the two rudders.
A necropsy revealed that the animal may have been infected with avian influenza, which would be "a big deal" if it is confirmed by further testing, scientists say.
Previous reported interactions between orcas and sailboats followed a clear pattern, with the animals losing interest and swimming away once they had broken the rudder.
A beluga whale that was discovered wearing a suspicious harness in 2019 is on the move in search of other belugas. But it's heading in the wrong direction.
Scientists think a traumatized orca initiated the assault on boats after a "critical moment of agony" and that the behavior is spreading among the population through social learning.
New footage shows, for the first time, how humpbacks scrub off dead skin and parasites to stay streamlined and keep their skin healthy.
A pod of about 30 orcas attacked and "badly wounded" two adult gray whales off the coast of California, according to drone footage.
The mostly white orca calf was spotted by a whale-watching vessel. It most likely has a pigment-related condition called leucism, experts say.
Humpback whales are iconic members of the baleen whale family thanks to their breathtaking breaches and hauntingly beautiful songs.
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