Mitsamiouli
Comoros · Mozambique Channel
Mitsamiouli on Grande Comore in the Comoros is a frontier diving destination — volcanic walls, coelacanths (in deep water, beyond recreational range), and reefs barely visited. Infrastructure is minimal.
How this reef is doing
ⓘ How we measure thisReef state
Volcanic island reef with limited monitoring data. Anecdotal reports describe declining cover.
Coral cover
Fish life
Heat
No unusual heat right now.
Fishing
Some fishing is allowed here, in marked zones.
Sources · MERMAID and partner coral surveys · NOAA Coral Reef Watch · Global Fishing Watch and reef gravity
What you will see
7 species across the dive sites here
Blacktip reef shark
Seen year round
at Itsandra Reef
Vulnerable
Green sea turtle
Seen year round
at Itsandra Reef
Least concern
Grey reef shark
Seen year round
at Itsandra Reef
Endangered
Spinner dolphin
Seen year round
at Itsandra Reef
Least concern
Humpback whale
Seasonal visitor
at Itsandra Reef
Least concern
Manta ray
Seasonal visitor
at Itsandra Reef
Hawksbill turtle
Rare sighting
at Itsandra Reef
Critically endangered
Dive sites
What divers say
The Comoros is the unknown corner of the Indian Ocean. Going for the rarity, not the comfort.
Good to know
Limited infrastructure
One or two dive ops; book ahead.