Sea turtles around Moso Island: sightings, nesting and respectful encounters

Wild sea turtles are one of the pleasures of diving around Moso Island, but a sighting is never guaranteed. Moso has reef, sheltered coastal water and nesting beaches. The evidence for nesting is strong; there is no reliable current count of turtles using its dive sites or a measured chance of seeing one on a particular trip.

Will I see a turtle on an Abyss Moso dive?

You might. Hawksbill and green turtles use Vanuatu's coastal waters, and Moso's reefs and nearby sheltered areas offer suitable habitat. The guide chooses sites according to conditions and the divers in the group. Abyss does not advertise a turtle encounter as a fixed inclusion or promise a particular animal, site or number of sightings. Book for the reefs, bommies, walls and varied marine life; treat a turtle encounter as a bonus.

Which sea turtles might I see around Moso Island?

Hawksbill turtles and green turtles are the two most relevant species for a reef or lagoon encounter. Hawksbills often forage around coral reefs; greens commonly feed in seagrass habitat. Both have been recorded nesting on Moso. Loggerheads and leatherbacks also occur in Vanuatu waters, but a diver should not assume an unfamiliar Moso sighting is one of these less typical local species. A pointed beak can help identify a hawksbill; a green turtle generally has a rounder head. Shell colour alone is unreliable.

Where around Moso are turtles most likely?

A hawksbill may forage or rest around reefs, while a green turtle may use shallow seagrass areas. Historic surveys recorded seagrass on Moso, but they do not establish the present extent or condition of those meadows. A turtle can also be travelling or surfacing for air. There is no verified ranking of Abyss's named dive sites by turtle encounter rate, so do not rely on Paul’s Rock, the west-side reef or any one site for a sighting. Tell the guide if turtles particularly interest you; the site and route still depend on the day's conditions.

What is the best month to see turtles at Moso?

Turtles can be in Vanuatu's coastal water outside nesting season. October to March is the main summer breeding and nesting period in Vanuatu; historical Moso monitoring sometimes continued into April. That is a nesting-season guide, not evidence that in-water sightings are most likely in those months. No reliable month-by-month Moso dive or snorkel encounter rate has been published. Visibility, weather, site choice and chance all affect what visitors see.

Are there lots of resident turtles at Moso?

Moso is a documented nesting island, especially for hawksbills, but the available research does not establish a current population of distinct turtles feeding or residing around its dive sites. Repeated sightings could involve the same animal or different visitors. It would be misleading to turn nesting counts into a present-day in-water population estimate or to say that every turtle seen on the reef was born on Moso.

Do sea turtles nest on Moso Island?

Yes. Historical monitoring identifies Moso's north-coast beaches as important hawksbill nesting habitat, and green turtle nesting has also been recorded. At Tassiriki beach, a national review compiled 147 hawksbill nests in the 2008–09 season, 93 in 2009–10 and 67 in 2010–11. Those are nests recorded in particular historical survey periods, not today's annual counts or proof of a population decline. A female can lay several clutches in one season. Regular current monitoring would be needed to describe today's nesting trend.

Can I watch nesting turtles or hatchlings on the Abyss trip?

Do not assume a nesting walk, hatchling release or turtle-tourism activity is included in a dive holiday. Nesting usually occurs at night in the warmer season, but no observation can be promised. Beach access and any guided activity need confirmation with local custodians and the operator. If you unexpectedly encounter a nesting turtle or hatchlings, keep the beach dark and quiet, avoid flash and bright torches, leave nests untouched and follow a trained local guide. Do not handle hatchlings for a photograph.

Can a snorkeller or non-diving companion see turtles?

A wild turtle may be seen from the boat, while swimming or while snorkelling where that activity is suitable and permitted. None of these is a guaranteed turtle swim. A non-diver can ask Abyss about joining the boat and about the planned beach-stop snorkelling; confirm the guide, equipment, transfer and conditions for the particular departure. The operator has not confirmed a separate dedicated turtle snorkel or nesting tour as an inclusion.

How close may I swim or dive to a turtle?

Vanuatu's turtle-interaction guideline says to stop and watch first, rather than swim straight at a turtle. If it continues its normal activity, any cautious approach should be from the side and stay about 3 metres away. Do not corner, surround, chase, touch, feed, hold or ride it. Keep its path to the surface open; turtles must breathe air. A group of more than three people should normally stay at least 5 metres away and remain on one side. If the turtle stops feeding, changes direction, speeds up or repeatedly moves away, back off. Follow the guide's instructions and any local rule requiring more distance.

Can I photograph a turtle?

Yes, if you can do so without altering its behaviour. Photograph from a respectful distance, stay neutrally buoyant, keep an escape route open and never block a turtle resting beneath an overhang from surfacing. For night diving, Vanuatu's guidance says to minimise torches and video lights near resting turtles and not to use white light or flash photography of turtles at night. A close-up obtained by chasing an animal is not a responsible encounter.

Are the turtles at Moso endangered?

Hawksbills are listed as Critically Endangered globally. The IUCN changed the green turtle's global assessment from Endangered to Least Concern in October 2025 following recovery in some populations. This does not measure Moso's turtles or remove local threats. Older Vanuatu brochures may still show the previous global green-turtle listing; check the date and geographic scope of any conservation claim.

Do Moso's nesting turtles remain on the island?

Not necessarily. Researchers satellite-tagged seven female hawksbills after nesting on Moso between 2018 and 2020. Three tracks headed towards New Caledonia, three towards Australia's Great Barrier Reef region, and one reached a feeding area near Aneityum in Vanuatu. One tagged female travelled roughly 2,073 kilometres over 55 days towards the Great Barrier Reef. These are journeys of seven known nesting females, not routes for every turtle a diver may meet. They help explain why Moso's nesting beach and feeding habitats far away both matter.

What about a turtle sanctuary or hatchling release on Moso?

Some tourism listings describe a Moso turtle programme. Vanuatu's 2025 tourism code says catching turtles for tourist viewing, keeping them captive as a tourism product and raising hatchlings for later release (head-starting) are not appropriate tourism products; specialist conservation work requires proper oversight and authorisation. The code and an earlier national review do not, by themselves, verify the present practices or permit status of a particular facility. Abyss's dive trip should not be described as including a sanctuary visit or hatchling release without specific confirmation. If considering a separate activity, ask how it protects wild turtles and how it follows current Vanuatu guidance.

How do I plan a turtle-friendly Moso dive holiday?

Choose the current Abyss Vanuatu trip (https://www.abyss.com.au/vanuatu) that fits your dates, certification and preferred pace, then tell the team that turtle sightings interest you. The guide can explain suitable sites while keeping wildlife and conditions in charge of the day. You can also read the Moso dive-site guide (https://www.abyss.com.au/moso-island-diving) and responsible dugong guidance (https://www.abyss.com.au/dugong-encounter-guidelines); dugong and turtle conduct are separate.

Research and local guidance

Vanuatu's 2025 sea-turtle interaction guideline (https://www.vanuatuconservation.org/wp-content/uploads/2025/08/2.-Guideline-for-Interacting-with-Sea-Turtles-in-Vanuatu-ART.pdf) explains in-water and beach behaviour. The Moso hawksbill satellite-tracking study (https://micronesica.org/file/1121/download?token=6vrkJ6sz) reports the seven tagged females. The national turtle conservation review (https://library.sprep.org/content/review-management-and-conservation-sea-turtles-vanuatu) compiles historical Moso nesting evidence. The 2025 tourism code (https://library.sprep.org/sites/default/files/2025-09/017-ENG-Code-of-conduct-for-tourism-operators-interacting-with-sea-turtles.pdf) addresses wildlife encounters and captive tourism. The IUCN's October 2025 update (https://iucn.org/press-release/202510/arctic-seals-threatened-climate-change-birds-decline-globally-iucn-red-list) explains the global green-turtle assessment. These sources do not provide a current Moso in-water population count or encounter rate.

Reviewed 26 September 2026. Wild sightings, site access, local rules and any separate turtle activity must be confirmed for the actual departure.