the dolphins in the rio coastal areas have been threatened by overfishing - by way of being caught in fishing equipment and by overexploitation of their food sources - frequent boat passage and environmental degradation around the metropolis.

as such, though conservation efforts are underway, dolphin sightings are an increasingly rare and valuable treat. reporting these sightings through the

cagarras islands website can help authorities learn more about dolphin habits and formulate ways to better protect them.