one local guide based on praia barra guaratiba (praia grande)is alexandre bigode, reachable at via phone at  21. 98218.2875 / 2410.0515 / 97852.7363 or via email here. everyone in the area knows alexandre, and his boats and associate guides are normally stationed on praia do canto - they can assist in reaching the beaches both via land or sea.  

we recommend going during week-days in the months between november and march, as during week-ends in the hot months these beaches might be more crowded than normal.