Vaavu Atoll

Vaavu Atoll (officially Felidhu Atoll plus the small Vattaru Reef to its south) lies in the central Maldives roughly 60-70 km south of Malé, reachable in about 90 minutes by speedboat. With only five inhabited islands and around 1,600 residents it is the country's smallest atoll by population, yet it offers some of the archipelago's most thrilling diving, built almost entirely around kandus (channels) rather than the isolated thilas (pinnacles) typical of Ari or North Malé. Its eastern rim is rimmed by Fotteyo Falhu, the largest continuous barrier reef in the Maldives at roughly 50 km, and the channels that breach it funnel the Indian Ocean's tidal exchange across coral walls honeycombed with caves, overhangs, and soft-coral swim-throughs. Fotteyo Kandu, at the atoll's far eastern extremity, is routinely ranked among the best dives in the country, while Miyaru Kandu ('Shark Channel') and Devana Kandu deliver schooling grey reef and whitetip sharks, eagle rays, and occasional hammerheads and sailfish on the channel edge. The atoll's signature experience, however, is the Alimatha night dive, where dozens of tawny nurse sharks, marbled stingrays, and giant trevally swarm the shallow house reef after dark - a dramatic encounter rooted in a long, and now controversial and illegal, history of feeding. Water is warm and stable at 27-30°C year-round and visibility typically runs 20-30 m, peaking at 30-40 m in the northeast-monsoon dry season (roughly December-April), when the famous eastern channels are at their best; the southwest monsoon brings rougher, greener water but pushes more rays into the channels. The headline channel dives are strong-current drift dives reserved for experienced divers, while Alimatha's calm, shallow night reef suits all levels.

• Fotteyo Kandu, at the eastern extremity of Vaavu Atoll, is routinely ranked among the best dive sites in the Maldives - a narrow channel of vertical drop-offs, caves, large overhangs, and soft-coral swim-throughs that acts as a highway for marine life, with grey reef sharks present on roughly 90% of dives, plus giant trevally, barracuda, eagle rays, and occasional hammerheads seen on early-morning dives.
• Miyaru Kandu ('Shark Channel') is a designated protected marine area, gazetted on 27 September 1995 and covering 1,383 hectares; its overhangs and soft-coral-festooned coral blocks draw grey reef and whitetip sharks during the northeast monsoon, with occasional hammerheads and sailfish.
• The Alimatha night dive is the Maldives' most famous nurse-shark spectacle: after dark, 20-50 tawny nurse sharks (Nebrius ferrugineus) together with large marbled stingrays and giant trevally circle the shallow (1-8 m) house reef in the jetty lights, often within a metre of divers - a habituation rooted in years of feeding that the Maldivian government has since banned.