channel
intermediateboat entry

Rangali Madivaru

Rangali Island · South Ari Atoll · Maldives

Rangali Madivaru is a channel entrance on the eastern rim of South Ari Atoll, renowned throughout the diving world as one of the most reliable locations on Earth to encounter reef manta rays. The site centres on a series of coral bommies at 12 to 15 metres depth that serve as a cleaning station, where small wrasses and butterflyfish remove parasites from mantas that hover motionless above the rocks. Divers descend to the reef adjacent to the cleaning bommies and take a position on the sand, watching as mantas glide in from the channel. On a good day, four to eight reef mantas may be present simultaneously, stacking in formation above the cleaning rocks like aircraft in a holding pattern. Each manta hovers for several minutes while cleaner fish attend to its gills and underside before peeling away and circling back for another pass. The behaviour is mesmerising and provides outstanding photographic opportunities. The channel itself adds biodiversity to the dive. Grey reef sharks patrol the channel entrance, and whitetip reef sharks rest on sandy ledges among the coral bommies. Napoleon wrasses of exceptional size are resident at the site and approach divers with curious familiarity. Eagle rays occasionally pass through the channel, and schools of bluefin trevally hunt along the reef edge. The channel walls support healthy hard coral growth with oriental sweetlips and snappers sheltering in the deeper overhangs. Rangali Madivaru's year-round manta presence distinguishes it from seasonal cleaning stations found elsewhere in the Maldives. The site sits along a natural manta highway between feeding and resting areas in South Ari Atoll, which supports a resident population of over 200 identified individuals. Occasional visits from oceanic manta rays, significantly larger than their reef cousins with wingspans exceeding five metres, elevate already exceptional dives into unforgettable ones. The moderate depth and manageable currents place this experience within reach of intermediate divers.

30 m
Max depth
10-30m
Visibility
Year-round
Best season

Marine Life

reef manta ray
oceanic manta ray
grey reef shark
whitetip reef shark
Napoleon wrasse
eagle ray
bluefin trevally
oriental sweetlips

Best Season to Dive

Highlighted months represent the ideal conditions for diving

27°C – 30°C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Location

Rangali Island · South Ari Atoll · Maldives

Coordinates: 3.5997, 72.5853

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Dive Site Depth Profile

Visual depth progression and waypoint route for Rangali Madivaru

Max Depth:30m
Waypoints:3
0m0m5m5m10m10m15m15m20m20m25m25m30m30mSea SurfaceChannel entry3mChannel mid18mChannel exit10m
* Plot shows dive progression checkpoints sequentially from left to rightDiveOne Club Depth Profile v1.0

Why dive here

One of the world's most reliable manta ray cleaning stations with encounters possible every day of the year
Multiple reef mantas frequently stacking in formation above the cleaning rocks, sometimes exceeding ten individuals
Occasional visits from oceanic manta rays with wingspans reaching five metres or more

Conditions & safety

Skill levelintermediate
Entry typeboat
Max depth30 m
Currentmoderate
Visibility10-30m
Best seasonYear-round
manta raychannelcleaning stationSouth Aripelagiccurrentworld classphotography

FAQ

What is the best time to see manta rays at Rangali Madivaru?

Manta rays are present at Rangali Madivaru throughout the year, making it exceptional compared to seasonal manta sites elsewhere. However, numbers and behaviour vary by season. During the southwest monsoon from May to November, mantas tend to concentrate on the eastern side of the atoll where plankton is richest, and Rangali Madivaru often sees its highest numbers. During the northeast monsoon from December to April, mantas are still present but may visit the cleaning station less frequently. Early morning dives between 7 and 9 tend to produce the best encounters as mantas visit cleaning stations before commencing daytime feeding.

What etiquette should divers follow around the manta rays?

Maldivian regulations and responsible dive practice require divers to maintain a minimum distance of three metres from manta rays and never to block their path or swim above them. At Rangali Madivaru, divers position themselves on the reef at approximately 12 to 15 metres depth and wait for mantas to approach the cleaning station overhead. Flash photography is discouraged as it may disturb the animals. Touching manta rays is strictly prohibited as it damages their protective mucus layer. Following these guidelines helps ensure the mantas continue to use this cleaning station and that encounters remain positive for both animals and divers.

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