temperature of 24 °C. Most of the mountainous terrain and the islands are covered by the Atlantic Forest. Two districts make up the municipality: São Sebastião District (Distrito de São Sebastião) and Maresias District (Distrito de Maresias). Islands and islets There are a number of islands and islets spread along the city's coastline, all of them created by ancient volcanic activities. The largest and most famous is the Ilha de São Sebastião (São Sebastião Island), which is part of the municipality of Ilhabela. Toque-Toque Islands Viewed from north to south, the Toque-Toque Grande island comes first after Ilhabela, and is located in front of the beach of the same name. There are neither beaches nor people there, but it is popular for scuba diving. The nearby Toque-Toque Pequeno Island is smaller, and resembles a sea turtle when seen from the Santiago Beach. Gatos Island The Ilha dos Gatos (Island of the Cats, located 1.8 km (1.1 mi) from Ponta da Baleia (Whale Point), a hill between Camburi Beach and da Baleia Beach), is an island open to the public. It is said that it was once owned by a member of the Rockefeller family, and that the ruins on top of its hills are from a mansion Rockefeller himself tried to have built, but that was prohibited by the Brazilian government. It is adequate for freediving. The waters surrounding Gatos Island are full of snooks, and they are also frequently visited by whales during the winter. Alcatrazes Islands The Alcatrazes Archipelago is formed by five bigger islands (Alcatrazes Island, Sapata Island, Paredão Island, Porto Island (aka Farol Island) and Southern island), and some smaller unnamed islands. It is the farthest island of São Sebastião, being some 30 km (18.6 mi) away from the southern tip of Ilhabela and 35 km (21.7 mi) from the nearest continental beach, Boiçucanga. Several birds, whales and other sea animals stop there seasonally to reproduce. The main island was once used by the Brazilian Navy as a howitzer shooting exercise range. As the shots were harming the environment of the island (either because of the noise or because of damage), the Brazilian Navy abandoned this practice. However, the island is still ruled by the military, who forbid fishing, diving and visiting on the island, except for researchers. The islands are within the Tupinambás Ecological Station. Two species of frogs (Cycloramphus faustoi and Ololygon alcatraz) and