
Sistema Dos Ojos
Known simply as Dos Ojos, this world-famous spot for snorkelling and diving is part of a flooded cave system north of Tulum on the Caribbean coast of the Yucatán Peninsula, and attracts thousands of visitors every year to its gorgeous blue ‘cenotes’, or sinkhole entrances.
These entrances feature amazingly clear blue water, so are ideal for snorkelling or even just taking photos of the turquoise waters and lush jungle surroundings. If you’re really brave, some cenotes offer visitors the chance to cave dive, throwing yourself off a cliff and plummeting hundreds of feet down into the pool below.