The waters surrounding this isolated rock in the Pacific Ocean are a heaving mass of fish. Dense schools of jacks, giant trevally and creole fish compete with Galapagos, silky and whitetip sharks. for attention. Swimming around the rock, you see that the walls are broken by cracks, crevices and several ledges where there were masses of young whitetip sharks. While the adults patrol in the blue, the babies rest piled on top of each other. As they are disturbed by diver bubbles and camera flashes, they take off, do a 30 second circuit around your head, then settle back down in another pile.