Cozumel

Cozumel is Mexico's classic drift-diving island where clear water, steady currents, and towering coral architecture create effortless wall dives. Most sites lie inside Arrecifes de Cozumel National Park, so marine rules are strict and conservation-focused. Expect glassy water around 27°C to 29°C for much of the year, with winter "Nortes" periodically closing ports. Signature sites like Santa Rosa Wall, Palancar, and Punta Sur deliver swim-throughs and dramatic drop-offs, while shallow reefs like Colombia Shallows are perfect for long second tanks and snorkeling. Topside, Cozumel fits easy logistics: a small international airport, constant ferries to Playa del Carmen, and short hops to parks, beaches, and Mayan history.