I suppose they are hard up for entertainment

[Mik]

First seen in Puget Sound in the 1980s, the salmon hat behavior spread socially through pods before vanishing for decades.

Its return may signal play, surplus food, or a fleeting cultural trend. Orcas still keep their reasons secret.

[Axtremus]

Maybe the orcas feel the need to have a response for 6-7?

[Mik]

It actually makes more sense than 6-7.

[jon-nyc]

I’ll bet it’s an obvious pun in orca language.