The Plaza Islands, North Plaza and South Plaza, are small but have a great variety of flora and fauna. Only South Plaza is open for visitors. On this southern island you will find the smallest species of land iguanas, but also nests of gulls, boobies, frigate birds, tropicbirds, marine iguanas, lava lizards and on the dock are often large male sea lions and their young resting. It can be difficult to get on land because of the sea lions there are on the dock. Often the guides have to shoo them away by clapping. Snorkeling off South Plaza is not allowed because there are too many sea lions. Offshore you can spot shearwaters, terns, mullet and surgeonfish. Farther out dolphins, mantas and killer whales have been seen. The island itself is an uplifted piece of sea floor. The island is only a kilometer long and a little wider than 100 meters. A big part of the island is dry with platforms of polished lava, parts without any trees, but many yellow flowers. The cliff is very steep and windy. From here you can observe the birds we described above perfectly.