Mozambique Marine Life: Dugongs, Whale Sharks and Turtles

Mozambique’s marine life includes fish, marine mammals and turtles associated with its coastal waters, reefs and island habitats. Understanding the animal and its habitat makes an encounter more interesting than simply ticking a name off a list. It also helps separate a research finding from a promise of what a boat trip will deliver.

Use this chapter for natural history. The diving guide, whale-watching guide and Bazaruto guide cover the corresponding travel choices.

Bazaruto: a protected seascape

Bazaruto Archipelago National Park protects 1,430 km² of marine and island habitat. African Parks identifies dugongs, dolphins, whales, sharks, rays and nesting marine turtles among its wildlife. The park is a living seascape shared with communities, rather than an empty backdrop to tourism. African Parks: Bazaruto

For planning, distinguish the habitat from the activity. A snorkelling visit, a boat journey and a dedicated dive explore different parts of the sea. Ask what the planned activity actually involves, what conditions are needed and what happens if conditions change. Start with the Mozambique islands guide if you are still choosing a base.

Dugongs in Mozambique: Bazaruto’s last known viable population

The dugong is a large, slow-moving marine mammal that grazes on seagrass, and the Bazaruto Archipelago holds what researchers call East Africa’s last known viable dugong subpopulation. A dugong is a mammal, not a fish: it breathes air, nurses its calf and belongs to the same order as the manatee. Its importance here is a reason for careful protection, rather than a reason to promise close encounters. Bazaruto conservation overview

How many dugongs are left in Bazaruto?

Aerial surveys between 2017 and 2021 estimated 325 dugongs (standard deviation 145) in the Bazaruto seascape. The same research team’s 2006-2007 surveys gave 359 (standard deviation 137). Their 2022 paper concludes that abundance has not changed significantly over those 15 years, but that the confidence intervals are too wide to detect small changes. Treat both numbers as estimates with a wide margin, not a headcount.

Are dugongs endangered?

Dugongs are listed as Vulnerable worldwide, but the East African population is Critically Endangered. IUCN’s December 2022 Red List update moved the East African dugongs to Critically Endangered and said fewer than 250 mature individuals remain there. IUCN names unintentional capture in fishing gear as the primary threat in East Africa. It also names boat injuries, and damage to the seagrasses dugongs depend on for food.

Where do dugongs live in Bazaruto?

Dugongs in Bazaruto gather in two core zones, and one lies outside the formally protected areas. The 2017-2021 surveys mapped those zones from a five-year run of sightings. The research team treats that gap as a reason to expand and manage marine protected areas, and to work with local communities on alternative livelihoods and small-scale fisheries. Dugongs need seagrass, so the health of the seabed matters as much as the animals themselves.

What is being done to protect them?

African Parks, which manages the national park, reports that its tracking work brought the total of individually tagged dugongs to around 40 in 2025. Those 40 are a research sample of the population estimated at roughly 325 (see above), so about 40 of the roughly 325 are tagged. The two figures measure different things and do not conflict: 325 is an aerial-survey estimate with a wide margin, not a count, and 40 is the number of animals fitted with trackers. Their movements show managers where protection is needed. Bazaruto biodiversity monitoring

Can you see a dugong on a Bazaruto trip?

A dugong sighting is a rare possibility, never something a boat trip can promise. Dugongs are shy and spread across a large seascape, and we do not know of any published sighting rate for visitors. What a day to Bazaruto does offer is the habitat they depend on: seagrass, islands and reef. If you want to see that seascape, our Bazaruto and Benguerra day trip from Vilankulo takes in the islands, the snorkelling and the sea itself. Ask the skipper how the boat avoids disturbing wildlife, keep your distance, and be prepared to let an animal move away.

Whale sharks: fish in an important feeding area

Whale sharks are the world’s largest fish, and southern Mozambique is an important feeding area for them. MMF’s Mozambique project identifies Inhambane’s coastal waters as particularly important to juveniles. Its researchers have used photo-identification to document more than 600 individual whale sharks in Inhambane waters since the research began in 2005. That is a cumulative identification record, not the number available to see today. MMF’s Mozambique Whale Shark Project

MMF’s tracking work also connects productive coastal waters from the Bazaruto seascape south to Zavora. Animals move, and research locations should not be read as fixed viewing stations. For an activity based around Tofo, ask the operator about recent sightings and sea conditions close to your dates.

The word whale in the name can confuse first-time visitors. A whale shark is a fish; a humpback whale is a marine mammal. They deserve different expectations and different activity descriptions.

Whales, dolphins and rays

Whales, dolphins and manta rays are part of Bazaruto’s documented marine wildlife. Presence in a protected-area account does not establish that an animal can be found on demand, or that the same activity is appropriate for every species. African Parks’ biodiversity account

If humpbacks are your priority, read the dedicated whale-watching chapter. For underwater activities, use the diving chapter to discuss experience level and conditions with a qualified operator. Do not turn a boat encounter into an unplanned swim: follow the crew’s instructions and the rules for that location.

Sea turtles: nesting beaches are habitat too

Bazaruto’s managers report nesting by five turtle species: green, hawksbill, loggerhead, leatherback and olive ridley. Their monitoring combines work at nesting beaches with tracking at sea. Seeing a turtle in the water and visiting a nesting beach are different experiences, with different arrangements. Bazaruto turtle monitoring

Ask the responsible park or operator whether a supervised nesting visit is available at your dates. Never assume access because a beach appears in an older guidebook. Follow the local instructions on lighting, distance and movement; do not touch turtles, eggs or hatchlings.

Choose an encounter that leaves room for wildlife

A responsible marine activity gives animals space and follows the local rules. Ask about the operator’s viewing practice before booking. Do not touch, feed, pursue or block an animal, and keep litter and equipment out of the water.

The sea is also a workplace. Read traditional fishing to understand the local livelihood side, and wildlife and conservation for the wider country picture. The best marine day can include small observations as well as a hoped-for large animal; plan around the experience, with sightings left to nature.

Reviewed 8 October 2026. Sources are linked beside the relevant information; dated research describes its stated observation period.