In Mazunte

Mazunte is a quiet little place that is trying to make a go of eco-tourism after centuries of being dependent on the now illegal turtle and turtle egg trade. Although there are few amenities, this is a great place to get away from it all. Mazunte is now home to an impressive turtle museum - the Centro Mexicano de la Tortuga. And on the western point of the crescent shape bay is Punta Cometa, the southernmost point in Oaxaca.
Also nearby is Playa Mermejita, one of two Oaxacan nesting grounds for the rare leatherback turtle: there you will find OceanoMar resort!
Playa Mazunte is the local beach with the west end known as Playa Rinconcito. The nearby beach of Playa Agustinillo is calmer and better for swimming than Playa Mazunte (it's only 3 minutes away).