Via David Pescovitz I came across this video of sea lions playing volleyball. (I initially thought they were seals because I was not aware of the differences between seals and sea lions but this article explains it. One thing that puzzles me is that the article says that sea lions are brown but these appear to be black.) They show extremely impressive skills, even spiking the ball and using strategic placing. I was pretty bad at this sport, never quite getting the hang of how to use my hands clasped together to control the direction of the ball.
My problem with clips like this is that ever since the abusive treatment of animals by theme parks and circuses in order to get them to perform tricks came to light, I can no longer take undiluted pleasure in such things because I do not know if the animals were treated badly in the training process. I do not know where this was done.