Here's his story. From USA Today...
What's black and white and warm all over? A penguin in a wetsuit, naturally.
Sounds like a joke, but it's quite serious for biologists at the California Academy of Sciences, who had a wetsuit created for an African penguin to help him get back in the swim of things.
Pierre, a venerable 25 years old, was going bald, which left him with an embarrassingly exposed, pale pink behind.
Unlike marine mammals, which have a layer of blubber to keep them warm, penguins rely on their waterproof feathers. Without them, Pierre was unwilling to plunge into the academy's penguin tank and ended up shivering on the sidelines while his 19 peers played in the water.
"He was cold; he would shake," said Pam Schaller, a senior aquatic biologist at the academy."