Pig Beach!

• Pig Beach (also known as Pig Island, Major Cay, and officially Big Major Cay) located in Exuma, the Bahamas, is uninhabited by humans, but wild pigs have taken over, and over time they have become good swimmers.
• According to Wikipedia, there are about 20 swimming pigs on the island, which they share with a few stray cats and goats.
• According to one theory: "They're said to have been dropped off on Big Major Cay by a group of sailors who wanted to come back and cook them. The sailors, though, never returned; the pigs survived on excess food dumped from passing ships. One other legend has it that the pigs were survivors of a shipwreck and managed to swim to shore while another claims that the pigs had escaped from a nearby islet. Others suggest that the pigs were part of a business scheme to attract tourists to the Bahamas."