Lemon Shark Valley (Opunohu Bay) – Moorea (Society Islands)

Site Overview

Lemon Shark Valley in Opunohu Bay is one of the most accessible and extraordinary large shark encounter sites in the world, where dozens of sicklefin lemon sharks rest on a shallow sandy bottom in water only two to three metres deep. This remarkable site allows both divers and snorkellers to observe these impressive three-metre predators in their natural resting behaviour, creating an intimate wildlife encounter that is virtually unmatched anywhere else in the Pacific. The lemon sharks gather in the sandy shallows of Opunohu Bay during daylight hours, resting on the bottom in groups that can number over twenty individuals in the peak season. Their docile resting behaviour allows close observation without the risks associated with active feeding or hunting, making this one of the safest large shark encounters available to the public. Green turtles share the sandy habitat, grazing on seagrass patches and providing additional large marine life encounters alongside the sharks. Stingrays glide across the sand flats with their broad wings, their graceful movements creating elegant silhouettes in the clear shallow water. The surrounding reef areas support blacktip reef sharks, nurse sharks, and eagle rays that add to the remarkable biodiversity of this compact area. The shallow depth means that extended observation times are possible without nitrogen concerns, allowing divers and snorkellers to spend considerable time watching the sharks and other marine life in their natural environment. The site has become an important educational resource, demonstrating that sharks are not the mindless predators of popular mythology but complex animals with sophisticated social behaviours and habitat preferences.