detailed instructions for the bus lines that connects zona sul to praia barra de guaratiba are posted on the next page. on this link, the institudo estadual do ambiente (inea)provides the suitability of several beaches, including praia da barra de guaratiba (praia grande). constantly updated, the red flags mean that swimming is not advisable, green flags mean waters are clean, and yellow flags suggest using own judgment - any of rio's beaches may have polluted waters within 24 to 48 hours following heavy rains.
