It is a little-known fact that, from time to time, an orca might swim up to a recreational boat, roll over so that the whale’s white undersides are facing the sky, and use the boat’s hull to get a good belly scratch. Biology textbooks won’t tell you about this sort of thing. But in Kachemak Bay, you might just be lucky enough to witness this phenomenon for yourself. When an orca needs a good belly scratch, and you’re on the boat that’s going to scratch that itch, you are lucky indeed.