Erm, actually they didn't mess that up. Killer whales do indeed have countershading. They are dark on the top and light on the bottom as a way of hiding themselves from potential prey by blending in with the background. Now, killer whales do indeed show disruptive coloration as well, particularly on the anchor patch. The two are not mutually exclusive. I really hope they're not teaching you that in Education Department training - not only is it inaccurate, it also contradicts SeaWorld's own educational material!Originally Posted by chicolito02
ETA: I should add here further explanation. People seem to say that it's not countershading because it's an abrupt color change rather than gradual. It's really a matter of splitting hairs and semantics. There's a reason that killer whales are dark on the top and light on the underbelly, and that's not a trait that evolved randomly. That's essentially a countershading effect. I've also seen it referred to as countershading in killer whales in the scientific literature on adaptive coloration.