Danny comes up with an idea for cashing in on the ecology movement... the Partridges should get a whale to be their lead singer. He had just played Laurie's new record, """"Song of the Humpback Whale."""" Laurie explains that whales are becoming extinct and she doesn't want to profit from their plight, but Danny doesn't understand. He puts an ad in the paper for a singing whale, and loads of people show up with their animals – a dancing bear, singing dog, chimp – but no whale. The Partridges go to Marineland and talk to Dr. Whelander, who agrees that they should make a record – to allow people to become aware of the plight of the whales so that maybe they'll do something to stop them from being slaughtered. He said that any profits Marineland receives will go to the New York Zoological Society, where they are working to save whales. Shirley says that her family will devote their profits to the whales too. At the recording session, E.J. Flicker walks in and claims the whale belongs to him s (thetvdb.com)