Addu is the Maldives' southernmost atoll, the only one lying across the equator in the Southern Hemisphere, which softens the monsoon seasons into year-round consistency. It pairs the country's largest shipwreck, the WWII tanker British Loyalty, with a manta cleaning station at Maa Kandu that hosts reef manta rays in all twelve months and a grey-reef-shark 'hotel' off Hulhumeedhoo.
Destination info
Conditions, highlights, and the resident marine life.
Conditions
Water and air temperature across the year.
WaterAirDryShoulderWet
Description
Addu (Seenu) Atoll is a heart-shaped ring roughly 18 km wide at the far southern tip of the Maldives, separated from the rest of the archipelago by the broad Equatorial Channel and uniquely straddling the equator into the Southern Hemisphere. Its four wide channels — Kuda Kandu and Maa Kandu in the north, Gan Kandu in the south, and the broad Villingili Kandu to the southeast — funnel the Indian Ocean's tidal exchange across long fringing reefs and a sheltered lagoon, while the western chain of Gan, Feydhoo, Maradhoo, and Hithadhoo is joined by a causeway built on the barrier reef. The atoll's signature attraction is the British Loyalty, a 134 m, 6,993-ton British tanker torpedoed by the German submarine U-183 on 9 March 1944 and finally scuttled in January 1946; it lies on its port side in 15–33 m between Maradhoo and Hithadhoo and is the largest diveable wreck in the country. Addu's position south of the equator dampens the sharp northeast/southwest monsoon swing seen in the central atolls, so conditions are unusually even year-round: water is a warm 27–31 °C, visibility commonly 15–30 m, and the Maa Kandu manta cleaning station is widely cited as the only one in the Maldives where reef manta rays (Mobula alfredi) are reliably seen in all twelve months. Grey reef sharks dominate the northern channels and the 'Shark Hotel' off Hulhumeedhoo on the northeast rim, joined by eagle rays, turtles, Napoleon wrasse, and schooling pelagics. Channel sites carry strong tidal currents and suit experienced drift divers, while the wreck, lagoon reefs, and Gan-side shallows welcome newcomers.
Highlights
What makes this dive worth the trip.
The British Loyalty is the largest shipwreck in the Maldives: a 134 m, 6,993-ton British tanker torpedoed by the German submarine U-183 on 9 March 1944 while serving as a fuel-storage hulk at Addu, then scuttled in January 1946. It now lies on its port side between Maradhoo and Hithadhoo, the hull running from around 15 m down to 33 m and smothered in coral after eight decades underwater.
The reef manta cleaning station in Maa Kandu is widely described as the only manta point in the Maldives where reef manta rays (Mobula alfredi) can be encountered all twelve months of the year, across both monsoons — a consequence of Addu's equatorial position, which evens out the seasonal swings that make central-atoll manta sites strictly seasonal.
The 'Shark Hotel' (Shark Point) on the outer reef off Hulhumeedhoo, at the northeast tip of the atoll, reliably holds 15–20 grey reef sharks at a time alongside whitetip reef sharks, making Addu one of the southern Maldives' most dependable shark dives.
Marine life
28 species you’re likely to encounter on a dive here.
Dive sites
6 signature sites at this destination.
British Loyalty (Wreck)
The largest diveable shipwreck in the Maldives — a 134 m British tanker torpedoed by U-183 in 1944 and scuttled in 1946 — lying on its port side in the lagoon between Maradhoo and Hithadhoo. The hull rises from a maximum of around 33 m to its shallowest railings near 15 m, with the four-bladed propeller around 23–28 m; on clear days the upper side is visible from the surface. Eight decades of growth have turned the wreck into a coral cathedral draped in hard and soft corals, sponges, and schooling reef fish, with sharks, turtles, and the occasional passing manta. Sheltered inside the atoll, it has little current and suits Advanced Open Water divers comfortable with depth.
15–33 mintermediateDay boatLightVisibility 10–30 m
Shark Point (Shark Hotel)
An outer-reef dive on the northeast rim of the atoll off Hulhumeedhoo, nicknamed the 'Shark Hotel' for the 15–20 grey reef sharks that hang over its sandy plateau at any given time, alongside resting whitetip reef sharks. The reef runs from around 5 m down a plateau near 30 m before dropping into the blue past 60 m. Sharks patrol the current line where the channel meets the open ocean, joined by tuna, jacks, and eagle rays; encounters are strongest on full- and new-moon tides when the channels run hardest. An exhilarating drift best suited to experienced divers.
5–35 madvancedDay boatStrongVisibility 15–30 m
Maa Kandu Channel
A current-fed drift along the mouth of Maa Kandu in the north of the atoll, the classic 'shark channel' of Addu. Divers begin over a shallow thila around 5–7 m and drift out toward the channel edge, where it drops to about 30 m and groups of grey reef sharks — sometimes 30 or more — hold in the moving water alongside schooling fusiliers and snappers, dogtooth tuna, Napoleon wrasse, and eagle rays; hammerheads, bull, or even tiger sharks are occasional deep-water surprises. The same channel hosts the Manta Point cleaning station on its eastern side. A strong-current drift for confident divers, with the easier Maa Kandu outer reef nearby for less-experienced groups.
5–30 madvancedDay boatStrongVisibility 15–30 m
Gan Inside
A sheltered shallow reef just inside the atoll near Gan and the airport, with a wall topping out around 5 m and shallow coral corridors, used as the area's main check-dive and beginner site. The calm, easy conditions make it ideal for first-timers and night dives: stingrays rest on the sand in numbers (ten or more is common), whitetip reef sharks patrol the corridors, and hawksbill and green turtles graze the coral, with macro life — nudibranchs, octopus, and the occasional frogfish — for photographers. Little to no current and ready shore or short-boat access.
5–18 mbeginnerShoreLightVisibility 10–25 m
Manta Point (Maa Kandu)
A reef manta cleaning station on a broad coral plateau on the eastern side of Maa Kandu, in the north of the atoll, and the headline of Addu diving. Reef manta rays (Mobula alfredi) queue over the cleaning block — generally around 17–21 m — while cleaner wrasse service them, most reliably on the incoming morning current; divers typically drop and hold position with a reef hook to watch without crowding the animals. It is widely cited as the only manta site in the Maldives with reliable sightings in all twelve months. Eagle rays, reef sharks, and turtles round out the cast, and currents can be strong on a running tide.
12–30 mintermediateDay boatStrongVisibility 15–30 m
Kuda Kandu
A channel-and-slope dive at Kuda Kandu, the smaller northern channel west of Maa Kandu, known for Addu's healthiest hard-coral cover. The reef slopes from around 8 m to about 25 m and is built of massive table, mushroom, and brain coral formations with comparatively little rubble, hosting dense schools of reef fish that draw in grey reef sharks and the occasional pelagic from the channel. Currents are moderate and the relatively easy profile makes it a good complement to the more demanding Maa Kandu drift, as well as a strong site for wide-angle reefscapes.
8–25 mintermediateDay boatModerateVisibility 15–30 m
Where to dive & stay
Local dive centers, resorts, and hotels.
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