Atol das Rocas is a lagoon off the coast of Brazil in the Brazilian State of Rio Grande do Norte, 260 km (160 mi) northeast of Natal. This is a volcanic formed island. This atoll was designated by UNESCO as a World Heritage Site because of it’s rich marine and coral life. The warm waters in this area are home to a caucus of brightly colored tropical fishes, coral reefs and it’s predator—the lemon shark.
With a thriving population of lemon sharks here, which pose very little threat to humans it’s possible to dive with a school of about 30 sharks at once making it a tangy experience.