A killer whale was spotted balancing a salmon on its head. It’s not clear what the behavior means, but orcas were observed doing the same thing in the 1980s.

A pod of killer whales has revived a curious trend from the 1980s in which they swim around with dead salmon balanced on their heads.

Researchers recently observed a killer whale (Orca) wearing dead salmon on their heads as hats, and believe it or not it's not the first time. It's something that the Orcas were doing back in the 1980s.

A group of orcas off the west coast of North America has brought back a bizarre fashion trend not seen since the late 1980s: wearing a single dead salmon on their heads as if it was a hat. Experts are at a loss to explain why orcas would want to wear fish in the first place,