Meet Jumbo! Meet Jumbo, the world's largest trained seal. MS/CUs Jumbo the sea lion performing tricks like balancing a child's doll on his nose in aquarium. TLS crowd applauding. Hilarious MS/CUs Jumbo the sea lion making series of moaning / gurgling sounds when prompted by trainer Lou Bohan: "Tell me, Jumbo, what does a motorboat sound like?" Hilarious."Next, one of General MacArthur's bombers flying over Tokyo." "And now, how about your imitation of the tobacco auctioneer." Too funny.