Tiny island of Big Mayor Cay, better known as, Pig Island.
Many kind of pigs live in that island.
When they get hungry, they simply dip into the tranquil warm waters to seek out the delectable morsels left for them by the tourists that traverse the area aboard their cruise boats.
In fact, over the years, they have become so savvy that they now sense when the next shipment of food is going to be dropped off and dash out to meet the yachts as they arrive.
but, my idea is little different.I think the pigs are eat too much, so people can't eat, so people throw them in the sea.