Southern Atolls — Huvadhoo & Addu

Getting down here means a domestic hop out of Male rather than a long overnight steam, and the boat is usually waiting near the airstrip. Most Huvadhoo diving is run from liveaboards, though a handful of resorts and guesthouses now dive it from land; the channel sites are far enough apart that a moving base still wins. Once aboard, the day is set by the tide rather than the clock: three or four dives, each run from a dhoni that trails the mother boat, dropping divers ahead of the moving water and collecting them wherever they surface.

Sites sort into three kinds and the tide decides which is worth doing. Channel dives are the point of the trip: drop on an outside corner, hook onto bare rock where the reef turns, and hold there watching the current-facing edge while the water does the work. Inside the atoll, coral pinnacles give shallower, gentler dives in slack water. Along the rim, outer walls fall away into open ocean and get dived as blue-water hangs when something large is reported moving through.

Addu is the exception to the liveaboard pattern. Its islands are joined by a causeway road, so guesthouses and shore-based centres run ordinary day boats and a week can pass without changing hotel. It is also where the diving gains hard structure to swim along and look into: the tanker British Loyalty, torpedoed in 1944 and, by most accounts, only left where she now lies after being scuttled at the end of the war. Manta cleaning stations here shift with the monsoon, so guides check different corners of the atoll in January than in July.

This is diving for people who already have moving water behind them and want fewer boats around than the central atolls put out. Expect negative entries, blue with no reference, and dives where the payoff is a shape at the edge of visibility rather than a wall of colour; hammerhead attempts in particular are early, deep and often blank. Photographers and anyone chasing sharks get a lot back for the extra flights, while divers after easy shallow reef and short transfers are better served further north.