As day turns to twilight, the reefs of the Caribbean are transformed, the fish sleep and a whole new community of marine creatures takes center stage, coral polyps and anemones, lobster, octopus, moray eels, and other night feeders. Explore dive sites such as Grampin, Aristos, Herradura and El Tunel reefs in the Cancun-Isla Mujeres Marine National Park. Night dives are also available for small groups (3 passengers minimum), maximum depth 50 feet.