The Simpsons — Episode 1: The Bonfire of the Manatees

You are watching the episode The Bonfire of the Manatees After Homer gets into trouble over his football gambling debts, he allows the Springfield Mafia to shoot a "snuggle film" in the house without Marge's permission. When she and the kids return home from a trip to "Santa's Village" and find production still going on, a furious Marge leaves for the beach and encounters a marine biologist named Caleb Thorn who has dedicated his life to saving manatees.