Ilha Comprida

Ilha Comprida is a dive site within the Cagarras Islands, located off Rio de Janeiro, with a sand and rock bottom reaching a maximum depth of 12 m and a shallowest point of around 5 m. The mixed substrate and moderate depth range make it well suited to discovery dives and beginner scuba divers, including those doing an accompanied introductory dive without prior certification.

The bottom terrain combines sand and rock and supports abundant marine life across the 5–12 m depth range. The site is also accessible to snorkelers along its west face, where calmer, shallower water (2–5 m) provides a gentler introduction to the area.

The best season runs from December to March, when warm water temperatures of 24–27 °C coincide with visibility of 8–15 m; on calm days with light winds and low swell, visibility can exceed 15 m. Outside peak summer, visibility remains usable through autumn (5–10 m, 22–25 °C) and spring (5–12 m, 21–24 °C), dropping and becoming more variable in winter. The verified water temperature range across the year is 19–27 °C.