Manta cleaning station of Rasdhoo

The Maldives is one of the world’s top destinations for manta ray encounters, and one of the most fascinating places to observe these gentle giants is at manta cleaning stations—natural underwater “spas” where mantas gather to have parasites and dead skin removed by tiny cleaner fish. Watching this ritual is one of the most mesmerising experiences a diver can have, offering a glimpse into a delicate relationship that keeps both the mantas and the reef ecosystem healthy.

Cleaning stations are specific coral bommies (big rocks), or reef corners where cleaner fish live and offer their services to passing marine animals. In the Maldives, these are often found around shallow reefs and lagoons, especially in nutrient-rich areas like Hanifaru Bay, Rasdhoo Atoll, and Ari Atoll. When the current is right, mantas glide in gracefully, circling above the coral heads as cleaner wrasses get to work.

The relationship between mantas and cleaner fish is a classic example of mutualistic symbiosis—a partnership where both species benefit.

This mutual trust is incredible to witness. Mantas approach with slow, deliberate movements, sometimes hovering almost motionless as the cleaners inspect every part of their body—even inside their mouths and gill slits.

If the mantas are satisfied with the cleaner wrasse’s services, she will come back to the station. However, if the services are for example to “harsh” (some fish can be a bit too aggressive removing the parasites), the manta will have a look at other stations.

Cleaning stations are essential to manta health and wellbeing, and their presence influences manta movement patterns throughout the atolls. Many mantas visit certain stations repeatedly, sometimes daily, as part of their natural routine. Protecting these sites is crucial not only for mantas but for the entire coral reef ecosystem that depends on these delicate interactions.

For divers and snorkelers, observing manta behaviour at cleaning stations is an unforgettable experience. The key is to watch respectfully: maintain distance, stay low, avoid blocking their path, and never chase or touch them. When given space, mantas often become curious and may circle close by, offering an intimate look at one of nature’s most graceful creatures.

The cleaning station in Rasdhoo for example is a big rock, and the divers will simply kneel around that block and watch the show. For snorkelers and freedivers, it is important to remember to not stay on top of the block and certainly not dive down on top of that block as it could bother the mantas and make them leave. Keep your distances from the manta and if you feel confident enough to go down, try to swim to their side rather then on top, as these animals have a peripheral vision and are more likely to see you on their side.