Whales sharks come to the Galapagos in large numbers at the same time every year. Why they do this is still a mystery. It is not to feed but it could be that they come to the islands to give birth. Yet no whale pups have been seen.
Geographically the world can be divided into five oceans, the Pacific, Atlantic, Indian, Southern and Arctic. These oceans cover around 70 percent of the earth and although we can't measure it exactly, it is estimated to have a volume of 1370 million cubic kilometres.