From TLS episode "Lucy at Marineland" originally aired 9/13/65
While at Marineland to see her son Jerry's favorite baseball player make an appearance, Lucy accidentally drops Jerry's autographed baseball into the porpoise pool and has to retrieve it. But the porpoises and seals would rather play than give Lucy the ball back. It was reported that the last 30 seconds of this episode took 45 minutes to film as the porpoises weren't cooperating very well--and it was no picnic for Lucille Ball either. All rights reserved to CBS and Paramount. I do not own The Lucy Show.