Subscribe to CNN’s Wonder Theory science newsletter for insights into the vast cosmos, with updates on groundbreaking discoveries, scientific progress, and more. Fashion trends may be fleeting, and as it turns out, even killer whales aren't immune to style experimentation. Back in 1987, a group of killer whales off the northwest coast of North America adopted an unusual fashion statement, balancing dead salmon on their heads for weeks. Recently, a male orca named J27, also called