South Mariane Island
Protected Area
Ile Coco National Park
Why dive here
With 183+ marine species recorded in the area - including barracuda, dolphins, sea turtles, sperm whales and lionfish - South Mariane Island offers some of Inner Islands's richest diving. Water ranges 27-30°C, warmest March, April, May.
South Mariane Island offers a straightforward dive, often with good visibility. We usually find schools of fusiliers and snapper cruising the reef edge here, with the occasional turtle gliding past. It's a relaxed spot, decent for a second dive or for divers getting comfortable in the Seychelles current. Don't expect huge pelagics, but it's a solid, pleasant dive.
Nearest Dive Centres to South Mariane Island
Dive shops near South Mariane Island
Trek Divers
Plongee Sous Marine
Azurro Pro Dive
Hawksbill Dive Centre
Octopus Diving Centre
Whitetip Divers
Reviews for South Mariane Island
Conditions
Ocean conditions, forecast and tides for South Mariane Island
South Mariane Island Ocean Conditions
Monthly averages for South Mariane Island, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-4.5, 55.52) (2km away)
October Averages
Sea Temperature
28°C
82°F · Range: 26.1–30.1°C
Current Speed
7.28 cm/s
Direction: W (285.9°)
Chlorophyll-a
0.213 mg/m³
Clear water
Salinity
35.24 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
Plan & book
Ways to dive Inner Islands, from day trips to liveaboards.
Day trips & courses
via GetYourGuideGuided dives, courses and snorkel trips with instant booking.
Find dive trips in Inner IslandsPlaces to stay
via Booking.comHotels and dive resorts near Inner Islands.
Search stays in Inner IslandsDive insurance
Most travel insurance excludes or limits scuba. Check what you need before you go.
Dive insurance explainedPartner links: we may earn a commission if you book, at no extra cost to you. How we make money
Where to Stay near South Mariane Island
Prices from Booking.com. We may earn a commission at no extra cost to you.