Corona del Diablo (Devil's Crown) is located north of Floreana Island, is a ring of uneven rocks that stick out of the water. Its name comes from the fact that it looks like a huge crown, due to its round shape. Once a volcanic crater, most of it was eroded away and only a few rocks remain, making it one of the best snorkeling spots in Galapagos. The rocks attract a diversity of splendid reef fish, and you can occasionally spot hammerhead sharks, white-tipped reef sharks, manta rays or sea turtles and of course, colorful fish.