The text provides information about different species of marine turtles and their habits. It mentions that there are seven species of marine turtles and five of them can be found in Brazil. It also states that most marine turtles live in warm regions as they rely on external heat to regulate their body temperature. Additionally, it mentions that only the females come out of the water to lay their eggs in the sand, and the baby turtles hatch from the eggs, dig their way to the surface of the sand, and make their way towards the sea. Therefore, the correct answer is "Tartarugas marinhas" (marine turtles).