Black Forest

Black Forest is a coral reef dive site located off the north coast of Mauritius, near Grand Baie. The site takes its name from the dense thickets of black coral (Antipatharia) and dark gorgonian sea fans that dominate the reef structure, giving it the appearance of a sunken forest. The reef descends through a series of ridges and sandy channels that create multiple micro-habitats across a maximum depth of 45 m.

The black coral formations, which thrive in the deeper sections of the reef, are ancient and slow-growing structures that shelter nudibranchs, shrimp, and juvenile fish. Across the wider reef, divers regularly see green and hawksbill turtles resting on the reef or grazing on sponges, eagle rays cruising the sandy channels, giant moray eels tucked into crevices, lionfish and scorpionfish camouflaged among the coral, groupers, snappers and fusiliers schooling in mid-water, octopus hunting along the sandy bottom, and butterflyfish, angelfish and parrotfish on the shallower sections. Reef sharks may also be spotted patrolling the outer reef edges, particularly in the early morning.

Visibility is typically excellent, ranging from 20 to 30 m on good days. Water temperature averages between 24 °C and 29 °C depending on the season. Currents are variable — gentle on calm days but capable of stronger tidal flows — making drift diving possible when conditions allow. The best period to dive the site is May to November, when the southeast trade winds are calmer in the north, seas are flatter, and visibility tends to peak; July and August are particularly favoured. The summer months of December to March bring warmer water and increased marine life activity, though occasional cyclonic weather can temporarily reduce visibility.