Parrachos de Maracajaú, Coral reef formation in Rio Grande do Norte, Brazil.

The Parrachos de Maracajaú is a reef system located off the northeastern coast of Brazil, where fish, sea turtles, and corals thrive in shallow bays. The formation spans several kilometers offshore and creates natural pools and channels with varying water depths.

The reef developed over thousands of years as coral polyps gradually built up structures along the northeastern coast. These geological formations became natural barriers that protect marine ecosystems in the region.

The reef lies within the Área de Proteção Ambiental dos Recifes de Corais, a protected area in Maxaranguape. Local boat operators run the trips out to the natural pools, and guides accompany snorkellers over the submerged corals. The reef is reached from Maracajaú beach, about 60 km from Natal.

The reef lies seven kilometres off Maracajaú beach in Maxaranguape, 60 km from Natal, inside the Área de Proteção Ambiental dos Recifes de Corais. Boats from the beach are the way out. Plan around low tide, when the corals surface and the natural pools appear; at high tide they stay submerged.

The reef lies within the Área de Proteção Ambiental dos Recifes de Corais, a protected zone in Maxaranguape municipality, 60 km from Natal. The coral barriers sit 7 km off Maracajaú beach and cover 13 km, emerging above the surface only at low tide.