In this delightful and humorous video, a humpback whale surprises onlookers by diving under a sailboat and waving goodbye. Captured during a rare encounter by underwater photographer William Drumm, the whale approaches close to the boat, turns on its back, and appears to respond to a friendly greeting with a playful fin and head poke. This charming interaction highlights the playful nature of marine wildlife and offers viewers a glimpse into the extraordinary moments that can happen in the ocean.