Motu Tiahura – Moorea (Society Islands)

15m Max

15-25m Vis

boat

Site Overview

Motu Tiahura is a small islet on the northern barrier reef of Moorea that provides excellent calm-water diving in a protected lagoon environment, with particular renown for its night diving opportunities and reliable encounters with nurse sharks and green turtles. The reef system around the motu features a mix of coral bommies, sandy patches, and seagrass beds that create diverse habitats supporting a wide variety of marine organisms. Nurse sharks are the headline species, frequently encountered resting on the sandy bottom or patrolling the reef edge with their distinctive whiskered faces and broad bodies. Unlike the more active reef sharks found at other Moorea sites, nurse sharks are generally docile and approachable, making them excellent subjects for observation and photography. Green turtles are abundant in the seagrass beds and on the coral bommies, with multiple individuals grazing or resting throughout the dive site. Stingrays glide across the sandy patches with their broad wings, adding to the large marine life encounters in this productive lagoon environment. The site comes alive at night when nurse sharks become more active, hunting octopus and crustaceans across the reef with their sensitive barbels trailing along the substrate. The night diving experience at Motu Tiahura is one of the most popular after-dark activities on Moorea, with bioluminescent plankton, sleeping fish, and hunting morays creating an unforgettable underwater spectacle in the warm tropical water. The shallow depth and calm conditions make the site accessible to divers of all experience levels, from beginners on their first night dive to experienced photographers seeking nocturnal subjects.

Dive Briefing

"The short boat ride from the Moorea dive centres brings you to the reef system around Motu Tiahura where the calm lagoon provides ideal conditions for relaxed diving. Descend to the sandy bottom and begin exploring the coral bommies that dot the reef flat, scanning the sandy areas for resting nurse sharks and gliding stingrays. The nurse sharks are typically found resting on the sand or patrolling the reef edge with their distinctive slow movements and whiskered faces. Green turtles are frequently encountered grazing on the seagrass patches or resting on coral bommies, their large shells making them easily identifiable from a distance. Move through the site at a leisurely pace, observing the diverse community of reef fish and invertebrates that inhabit the coral and sand habitats. The moray eels are well-established residents in the coral bommies, with some individuals extending their heads from crevices to investigate passing divers. For night dives, the site transforms dramatically as nurse sharks become active hunters, their barbels trailing along the substrate as they search for octopus and crustaceans. Torch light reveals sleeping parrotfish wrapped in mucus cocoons, hunting morays emerging from their daytime crevices, and bioluminescent organisms creating sparkles of light in the dark water column. The calm shallow conditions make Motu Tiahura one of the best night diving sites for beginners to experience the magic of after-dark diving in a safe and comfortable environment."