Akumal Bay

Akumal is a bay on the Riviera Maya between Playa del Carmen and Tulum, sheltered by a reef with a shallow seagrass bed inside it. The name means place of the turtles in Yucatec Maya, and it is accurate rather than decorative.

It is one of the few places where green turtles can reliably be seen from the surface without a boat. They come into the bay to graze the seagrass, in numbers, throughout the year. That reliability turned Akumal into a mass snorkelling destination through the 2000s, and the pressure did visible damage — turtles crowded, seagrass trampled, coral broken.

The response, since 2016, has been regulation, and a visit now works differently from the way older guides describe. A designated turtle zone requires a licensed guide, life jacket and set group sizes; sunscreen is restricted; and there are limits on numbers in the water. The rest of the bay is free to swim in. Enforcement has varied and the arrangements have changed more than once, so checking the current position locally is worth the trouble.

The bay itself is calm and shallow, reef-protected, with fine coral sand and a gentle entry. Beyond the seagrass the reef holds fish and coral in moderate condition. Development is a small village of hotels, condominiums and dive shops behind the beach, low-rise and quiet compared with the resorts either side. Half Moon Bay immediately north is the same reef system with fewer people and no turtle-zone restriction, and Yal-Ku lagoon at its far end is a brackish inlet where fresh groundwater meets the sea and the fish gather at the boundary.

Turtles graze the seagrass here whether or not anyone is watching, and the rules — a guide, a life jacket, no conventional sunscreen, a capped group — exist because for years nobody enforced any of them and the bay showed it. Snorkel with an operator and stay off the grass beds. The cenotes inland are the alternative when the bay is full, and they are extraordinary.