Galapagos locomotive

Before going to the Galapagos Islands, I dived a lot, and I saw a lot of things underwater. Including I have already seen and whale sharks. And of course they were quite large fish. The largest of all. But that whale shark, which we met on the Galapagos, could not be called a fish. It was a monstrous sized creation. A real multi-meter locomotive that moved along a certain route. And no power in the ocean could not change this route!