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

Nosy Be · Madagascar · Reef · Coral garden

Kassimo

A long soft-coral reef thick with reef fish, kept for the third dive

Area photo: Diego Delso · CC BY-SA 4.0

Kassimo is a long, shallow reef in the Mitsio Archipelago, covered in soft corals and sponges between 5 and 15 m. It is ideal for the third dive of a day on a Mitsio cruise. Divers come for the density of reef fish along the whole length of the reef.

Where it is and how deep

Depth profile of Kassimo: typical dive 5–15 m (15–50 ft) 18 m · Open Water30 m · Advanced40 m · Recreational limit5 m15 mtypical dive
Depths on a shared scale to 40 m (130 ft); dashed lines mark common certification limits.

No published position for this site — the map shows Nosy Be and its other sites; operators know the mooring.

The dive

The dive follows the length of the reef between 15 m and 5 m, over a cover of soft corals and sponges. Reef fish are especially plentiful along the whole stretch, and the reef is ideal for a third dive of the day.

Marine life and season

  • Reef fish swarms
Month-by-month season rating for Kassimo
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.

Sources

  1. Mitsio Archipelago - Diving Cattitude — Diving Cattitude

More dive sites in Nosy Be

Reef

Banc d'Ankaréa

Coral plateau with fusilier shoals, turtles and passing grey sharks

12–25 mintermediate

Seamount

Banc du Petit Castor

A 500 m dome where grey reef and leopard sharks patrol the slopes

9–60 madvanced

Wall

Four Brothers

Sheer walls where barracuda, mobulas and whitetips pass

0–30 mintermediate

Wall

Gaby Rock

A deep drop-off off Nosy Iranja with a fair chance of big fish

40–70 madvanced

Wall

Greg's Wall

A tunnel and arches cut through a gorgonian wall below 30 m

13–38 m · max 70 madvanced

Pinnacle

Les Tétons

Two rock peaks breaking the surface, cut through with arches and caves

5–20 mintermediate

Artificial reef

Mahaveluma

A scuttled trawler at 28.5 m off Nosy Sakatia

to 28.5 madvanced

Reef

South Canyon

Leopard, grey and whitetip sharks on a hand-shaped reef

to 26 madvanced

Similar dives elsewhere

Reef

Banana Reef

Addu Atoll · Maldives

A banana-shaped reef dived from the surface to 30 m

0–30 mintermediate

Reef

Grande Banks

Goa & the Grande Island · India

A large field of plate coral between the two islands

5–13 mbeginner

Reef

Aquarium

Mauritius · Mauritius

Shallow coral and a multitude of small reef fish

5–20 mbeginner