Cozumel is an island in the Caribbean Sea, 35 min from Playa del Carmen.
The name Cozumel means in Mayan : the island of swallows.
Most of visitors go there for scuba diving and snorkeling. On the island you can rent bike, rent golf cart or use taxis.
To get to Cozumel you have to take the UltraMar Ferry (12 us$ one way), boats are leaving every hour from Playa del Carmen : See it on Google Maps.
HOW MUCH ?
The ferry is about 25 us$ round-trip.
In Cozumel you can rent golf cart ( up to 4 people, around 25 us$ / cart )