25-40m
    Mafia Island, Tanzania
    Mangrove

    Monoliths

    Best months: Jun–Oct

    Protected Area

    Mangrove

    Why dive here

    With 165+ marine species recorded in the area - including humpback whales, sea turtles, sperm whales and whale sharks - Monoliths offers some of Mafia Island's richest pinnacle diving. Water ranges 26-29°C, warmest February, March, April.

    Best timeJun–Oct
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeHumpback Whales, Sea Turtles, Sperm Whales and Whale Sharks · 165+ species recorded
    Water26-29°C · warmest February, March, April
    CharacterPinnacle dive · max 25-40m
    StandoutExceptional marine biodiversity

    The Monoliths at Mafia Island really do live up to their name. Picture huge, coral-covered columns rising from deeper water, making you feel pretty small as you glide between them. It’s an interesting sensation, almost like flying past underwater skyscrapers. We often spot big schools of fusiliers here, sometimes so thick they obscure the view of the reef for a moment, and we’ve seen a few green turtles grazing on the hard corals. With a maximum depth around 22 meters, it's a relaxed dive suitable for most divers looking for impressive formations and plenty of fish action.

    Typical Monoliths Dive Profile

    10m20mSafety Stop0m25m max~30 min estimated bottom time

    Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

    Safety Notes

    Depth of 25m - Advanced Open Water certification recommended.

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today05:5818:1512h 17m daylightGolden hour 17:47

    Reviews for Monoliths

    Sign in to write a review

    Conditions

    Ocean conditions, forecast and tides for Monoliths

    Monoliths Ocean Conditions

    Monthly averages for Monoliths, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (-8.12, 39.65) (37km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    27°C

    81°F · Range: 26.2–28.4°C

    Air Temperature

    26°C

    79°F

    Wind Speed

    7.33 m/s

    14.2 knots

    Atmospheric Pressure

    1014 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

    Plan & book

    Ways to dive Mafia Island, from day trips to liveaboards.

    Day trips & courses

    via GetYourGuide

    Guided dives, courses and snorkel trips with instant booking.

    Find dive trips in Mafia Island

    Places to stay

    via Booking.com

    Hotels and dive resorts near Mafia Island.

    Search stays in Mafia Island

    Dive insurance

    Most travel insurance excludes or limits scuba. Check what you need before you go.

    Dive insurance explained

    Partner links: we may earn a commission if you book, at no extra cost to you. How we make money

    Where to Stay near Monoliths

    Prices from Booking.com. We may earn a commission at no extra cost to you.

    Back to Mafia Island