A real passion for many seasoned divers, looking for nudibranchs is one of our favourite thrills when diving anywhere on the planet. These small sea snails come in an endless array of beautiful colours. It's not common knowledge, but we have found several different kinds on Moorea.
Moorea is a sanctuary for a variety of marine life, from the majestic sharks, whales, and turtles that glide through its deep blue waters to the more diminutive yet equally fascinating creatures like nudibranchs that inhabit its lagoons and coral gardens. These vibrant sea slugs are not as commonly spotted as the larger fauna, but their sporadic appearances offer a special kind of thrill to the avid diver. The lagoon, a calm and serene underwater tapestry, especially around the stretches of Temae beach and Papetoai, provides a backdrop where nudibranchs can be observed gracefully meandering around on tranquil days.
Sixteen species
With approximately 16 species of nudibranchs and flatworms documented in the combined realms of Moorea’s lagoon and ocean, the diversity of these creatures is a testament to the rich biodiversity of the island. Among the myriad of species, Chromodoris lochi and Goniobranchus kuniei are the most frequently observed, their striking patterns and colours providing a dazzling display against the subtle hues of the ocean floor.
The quest for nudibranchs in Moorea is a testament to the resilience of these creatures amidst the island's vibrant swells. These conditions, while adding to the aquatic charm, render the environment quite challenging for the typically serene nudibranchs. Yet, in the calm of overhangs and protected canyons, these delicate beings find refuge, making these spots ideal for divers in search of their vivid forms.
Where to find them
This year, the waters of Taotoi Pass have been particularly generous, granting numerous sightings of the much-desired flabellina, specifically the Flabellina exoptata. The flabellina, with its ethereal tentacles and translucent body, is a sight to behold, a reminder of the delicate beauty that lies beneath the surface.
In these quieter waters, away from the ocean's tumult, nudibranchs add splashes of colour and life, rewarding the persistent diver with rare sightings. It is a silent hunt that requires patience, a venture into the lesser-known enclaves of Moorea's marine life, where each discovery is a prized and significant encounter.
The science of nudibranchs in Polynesia
The study and admiration of nudibranchs in Moorea also contribute to a larger understanding of the health and changes in marine ecosystems. Each sighting, each recorded species, adds to the cumulative knowledge of biodiversity and environmental shifts.
Furthermore, the presence of nudibranchs and flatworms in Moorea’s waters is not merely a boon for the scientific community; it's a draw for underwater photographers and nature enthusiasts who come from across the world to capture their essence. The challenge of photographing these small, often camouflaged creatures is a rewarding endeavour, one that requires a keen eye and a gentle approach to avoid disturbing their natural habitat.
In conclusion, the sightings of nudibranchs by Moorea's reefs are rare, but important and deligthful. While they may not be the giants of the sea that draw crowds, their subtle beauty and the thrill of their discovery are unmatched.
Let us take you on a nudi hunt on Moorea
If you are a diver passionate for small, slow moving stuff, we are with you. While larger dive groups often kick ahead so fast you miss all the small treasures, our private tours can focus on just finding small stuff. While we can't guarantee a nudi spotting, we know the best places to look for them!
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