Reefwander
Two trevally cruise over a coral reef off Saint-Gilles on the west coast of Réunion

Réunion · France · Cave & cavern · Reef

Arche de Noël

A ten-metre arch cresting at 20 m, its feet on the bottom at 42 m

Area photo: Cynomana · CC BY-SA 4.0

Arche de Noël is the arch dive of the Pointe au Sel ground at Saint-Leu: a rock span about ten metres across, cresting 20 m below the surface and grounded on the bottom at 42 m. Divers pass under it and, further out, swim a tunnel 37 m long. A 40 m certification is the stated minimum and no part of the dive is shallow.

Where it is and how deep

Depth profile of Arche de Noël: typical dive 20–40 m (66–130 ft), deepest point 42 m (138 ft) 18 m · Open Water30 m · Advanced40 m · Recreational limit20 m40 m42 m maxtypical dive
Depths on a shared scale to 50 m (164 ft); dashed lines mark common certification limits.

21.2028° S, 55.2808° EApproximate position — the dashed circle shows where the site lies; your operator's briefing has the mooring.

The dive

The descent brings you onto the top of the arch, which crests 20 m below the surface, and the span is around ten metres across with its feet on the bottom at 42 m. You can pass through it, which is the picture most divers come for, and the depth you choose to do that at sets the shape of the rest of the dive: the directory works the site as a 20 to 40 m profile and rates the surrounding relief, all peaks and plateaus, as the other half of the interest.

Continuing offshore there is a short piece of caving in a tunnel 37 m long, picked up by rising slightly as you go — small enough to feel like a swim-through and long enough to want a light. Spiny lobsters sit back in the rock, sponges grow on it, reef fish are varied over the structure and a turtle is on the site's list. From July to October it is worth paying attention on the boat as well: humpbacks and their calves pass off this coast.

Marine life and season

  • Sea turtles
  • Macro critters
  • Whales
Month-by-month season rating for Arche de Noël
JanFebMarAprMayJunJulAugSepOctNovDec
FairFairGoodGoodPrimePrimePrimePrimePrimePrimeGoodFair

Season follows Réunion: May–Oct is the dry season with the calmest water and humpbacks Jul–Oct; Jan–Mar is cyclone season.

Questions divers ask

What certification do you need for Arche de Noël?+

PE 40 is the stated minimum. The top of the arch is at 20 m, its feet are on the bottom at 42 m, and the directory works the site as a 20 to 40 m dive.

Sources

  1. Arche de Noël — Carte de La Réunion

More dive sites in Réunion

Artificial reef

A small barge on black sand, thick with fish

to 25 mintermediate

A 1999 scuttling on her port side, holds full of soldierfish

20–40 madvanced

Shallow plateau with dense fish and varied coral

to 20 mintermediate

A cliff that begins at 37 m and falls to 60 m in the blue

37–60 madvanced

Cave & cavern

A collapsed reef cavern with easy galleries at 3 to 17 m

3–17 mbeginner

Similar dives elsewhere

Cave & cavern

Thundercliff Cave

Christmas Island · Australia

A cavern that surfaces in a chamber open to the sky

5–22 mintermediate

Cave & cavern

Cathedral

Ifaty & Mangily · Madagascar

Tunnels, swim-throughs and arches in the middle of the North pass

to 16 m · max 18 madvanced

Cave & cavern

Le Canyon

Rodrigues · Mauritius

A canyon that passes right under the barrier reef

to 17 mintermediate

Cave & cavern

The Big Cave

Meemu Atoll · Maldives

A cavern about 10 m high running from 15 to 30 m

15–30 mintermediate