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Blue triggerfish with maze-like yellow markings hovering over pale coral rubble — Nosy Be

Nosy Be · Madagascar · Wall · Pinnacle

Four Brothers

Sheer walls where barracuda, mobulas and whitetips pass

Area photo: Diego Delso · CC BY-SA 4.0

The Four Brothers are monoliths in the Mitsio Archipelago whose vertical walls drop from the surface to 30 m. The faces are coloured with growth and full of small life, and the open water off them brings passing pelagic fish. Divers come for the walls and the chance of sharks and mobula rays.

Also known as Les Quatre Frères, Les Quatres frères.

Where it is and how deep

Depth profile of Four Brothers: typical dive 0–30 m (0–100 ft) 18 m · Open Water30 m · Advanced40 m · Recreational limit0 m30 mtypical dive
Depths on a shared scale to 40 m (130 ft); dashed lines mark common certification limits.

13.0282° S, 48.5453° EApproximate position — the dashed circle shows where the site lies; your operator's briefing has the mooring.

The dive

The walls run vertically from the surface down to 30 m. Cleaner shrimp and ribbon morays sit in the colourful growth on the rock, and gaps in the walls are packed with glassfish. Away from the face, the blue carries passing pelagics: barracuda, mobula rays and whitetip reef sharks move along the walls.

Marine life and season

  • Barracuda
  • Mobula rays
  • Reef sharks
  • Reef fish swarms
  • Macro critters
Month-by-month season rating for Four Brothers
JanFebMarAprMayJunJulAugSepOctNovDec
Off-seasonOff-seasonFairGoodGoodGoodGoodGoodGoodPrimePrimeGood

Season follows Nosy Be: Cyclone season (Jan-Mar) shuts down most diving; whale sharks aggregate Oct-Dec and humpback whales pass offshore during the austral winter.

Dive videos

Diving Tsarabanjina, Madagascar 2024 (Mercian Divers BSAC 2463) · psymyk on YouTube

Sources

  1. Mitsio Archipelago - Diving Cattitude — Diving Cattitude
  2. Diving - Constance Tsarabanjina — Constance Hotels & Resorts
  3. OpenStreetMap: Tsarabanjina — OpenStreetMap

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