Tunnel

Tunnel is a popular south‑east coast dive site located off Mahébourg and Pointe d’Esny, known for its natural swim‑through carved into the outer reef. The passage sits around 18–22 m and offers a gentle overhead environment suitable for intermediate divers.

The site combines a short tunnel‑like corridor with colourful reef sections and good chances of spotting reef fish, lobsters and small pelagics moving along the reef edge. Its sheltered structure and moderate depth make it a favourite among local operators.

A Natural Swim‑Through in the Outer Reef

The defining feature of Tunnel is a narrow passage created by coral formations and collapsed reef blocks. Divers can swim through the opening in single file, emerging onto a sandy channel bordered by hard corals and sponges.

A Comfortable Mid‑Depth Profile

With a depth range of 18–22 m, Tunnel offers a relaxed profile suitable for intermediate divers. The site provides enough structure to explore without exceeding recreational depth limits.

Reef Life Around the Passage

The area around the swim‑through hosts a variety of species. Snappers, soldierfish and goatfish gather near the entrance, while lobsters and moray eels hide in crevices. The outer‑reef setting also attracts passing jacks and other small pelagics.

Clear Water and Gentle Conditions

The south‑east lagoon and outer‑reef visibility often highlight the contours of the tunnel and surrounding coral. Conditions are generally calm, making the site accessible for divers with moderate experience.

A Scenic and Accessible Swim‑Through

Tunnel offers a fun and atmospheric experience without the risks of a true cave dive. Its combination of structure, marine life and manageable depth makes it a reliable choice for divers exploring the Mahébourg area.