Ubatuba is a Brazilian municipality, located on the southeast coast, in the state of São Paulo. It is part of the Metropolitan Region of Vale do Paraíba e Litoral Norte. The population is 92,819 (2021 est.) in an area of 723.88 km², of which 83% is located in the Serra do Mar State Park. Ubatuba is one of fifteen municipalities in São Paulo that the state considers to be coastal resorts because they satisfy specific standards set by state legislation. This classification entitles these communities more money from the state for the development of regional tourism. In addition, the municipality gains the right to add the title of seaside resort to its name, a word used both in the official municipal file and in state references. Toponymy Its name is of Tupi origin, and it has at least two meanings. Ubá means canoe in Tupi, whereas u'ubá means river cane, which is a type of grass utilized by the indigenous people to make arrows. Because tyba means "gathering", the city's name might refer to either "gathering of river reeds" or "gathering of boats." Location Ubatuba is linked with the Rodovia Longitudinal or the BR-101. It is located east of São Paulo and east-northeast of Santos and west of Rio de Janeiro. At latitude 23°26'21.45", it is bounded to the north by Paraty (Rio de Janeiro), to the south by Caraguatatuba, to the west by Cunha, São Luiz do Paraitinga, and Natividade da Serra, and to the east by the Atlantic Ocean. The city lies on the Tropic of Capricorn, which crosses just in front of the municipal airport runway. The urban area is mainly concentrated in the Atlantic and valley areas. The city frequently receives rain, hence the nickname Uba Chuva (chuva being Portuguese for "rain"). Much of the land to the north is forested and mountainous, forming a part of the Serra do Mar mountains. Serra do Mar State Park was established in order to conserve and preserve the Atlantic Forest and covers 83% of the municipality, having a few connector roads through the mountain range and consisting of three centers within Ubatuba: Cunha-Indaiá, Santa Virgínia and Picinguaba. The municipality contains part of the Tupinambás Ecological Station, which protects some of the coastal islands. A marine park was created under Projeto TAMAR (TAMAR Project) to protect sea turtles. In addition, the Oceanographic Institute of the University of São Paulo