Vaavu Atoll dive sites

The Alimatha Jetty dive focuses on the area directly beneath and around the overwater jetty structure, where the artificial lighting concentrates sharks and rays in a confined viewing area. The House Reef Night Dive extends beyond the jetty to the broader reef surrounding Alimatha island, offering encounters with the same species plus additional night-active marine life across a wider area. The house reef dive typically begins at the jetty area for the shark and ray spectacle, then moves along the reef edge where divers find hunting moray eels, Spanish dancers, octopuses, and reef fish in their nocturnal behaviour. It provides a more complete night diving experience.

Tawny nurse sharks are generally docile and pose minimal risk to divers who behave responsibly. They are bottom-dwelling sharks that feed on crustaceans and small fish, not large prey. At Alimatha, the sharks are habituated to human presence and diver lights, typically continuing their natural behaviour without reacting to nearby divers. However, divers should never touch, grab, or restrict a nurse shark's movement, and should avoid positioning themselves between a shark and its escape route. Maintain neutral buoyancy and keep fins away from the animals. Bites, while extremely rare, have occurred when sharks were grabbed or stepped on.

The shark and ray aggregation at Alimatha builds gradually from late afternoon and peaks between dusk and approximately 9 PM. The process begins as the dock lights are activated and fish activity around the structure increases, attracting the first nurse sharks. By dusk, a dozen or more sharks typically occupy the area, with numbers increasing after dark. Giant stingrays arrive slightly later, gliding into the lit zone to feed alongside the sharks. The most dramatic viewing occurs in the first hour after full darkness, when both species are present in maximum numbers and the artificial lighting creates optimal visibility.

The Alimatha Jetty night dive is suitable for all certification levels including recently certified Open Water divers. The maximum depth is approximately 12 metres, the site is sheltered from currents, and the entry is from the shore or jetty steps. However, divers should be comfortable with night diving and have completed at least one guided night dive previously. The presence of numerous sharks and rays in close proximity can be startling for first-time night divers, so basic comfort in dark water conditions is important. All dives are guided by resort or liveaboard staff.

While the Alimatha Jetty can be dived during the day, it is overwhelmingly visited as a night dive because the main attraction is the nightly gathering of nurse sharks and stingrays that begins after sunset. During daylight hours the area under the jetty is a pleasant but unremarkable house reef dive. The sharks and rays begin arriving as darkness falls and the jetty lights switch on, typically between 6 and 7 in the evening. Liveaboard boats often anchor nearby to offer their guests this dive as a special evening activity.