Fuvahmulah's harbour mouth holds the largest known gathering of tiger sharks anywhere on Earth. A 2024 study in Scientific Reports photo-identified 239 individual tigers here, more than four in five of them female, many staying on through their long pregnancies. The reason lies in the island's shape. Every other Maldivian atoll is a ring of islets around a shallow lagoon; Fuvahmulah is one teardrop-shaped island that forms an entire atoll by itself, rising out of deep ocean with no lagoon to soften the drop-off. Nutrient-rich open water therefore begins metres from the beach. The same shape holds rain instead of shedding it: the island dips into a shallow bowl carrying Bandaara Kilhi and Dhadimagi Kilhi, two natural freshwater lakes ringed by marsh and peat in a nation otherwise built from bare coral sand.
The shark dive exists because of the island's fishing waste. Fuvahmulah's fishermen have gutted tuna and thrown the scraps overboard for centuries, and once the harbour was finished in 2004 that waste began piling up in one place; boats have been running divers out to meet the sharks that came for it since 2017. You kneel on the sand in open channel water and wait for a shape to resolve out of the blue, while threshers and scalloped hammerheads work the same depths. Above the surface the island keeps another pace. Families gather at Thoondu, a beach of small round pebbles that glitter in the sun and lie on no other Maldivian shore, while the single ring road threads through breadfruit and banyan forest. UNESCO made the island a Biosphere Reserve in 2020, with those wetlands at its core, and the whole place is far greener and wilder than the coral sandbars most people picture when they think of the Maldives.