Tanzania Marine Conservation & Diving



Time Commitment

Part time (10-30 hrs/wk)


Short-Term (few weeks/months)


Mafia Island


Tanzania's coast is home to some of the most spectacular diving in the world. The crystal clear waters host a wealth of marine habitats and wildlife making this a perfect location to scuba dive and explore this pristine and magical underwater world.

The vivid, multi hued coral reefs support a dazzling array of tropical reef fish and provide rich feeding grounds for turtles, rays and other marine creatures whilst the deep blue offshore waters support sharks, dolphins and whale sharks, as well as vast shoals of cruising pelagics.

Dive and snorkel to explore this pristine seascape and you'll discover and possibly help to map extensive areas of undamaged coral, find healthy populations of multicoloured fish, see turtles and marine mammals and learn to recognise a huge diversity of inter tidal animals from tiny hermit crabs to pastel hued anemones.

On shore apart from relaxing on the island's perfect, undeveloped beaches you may have the chance to work in the lush mangrove forests, unique ecosystems which straddle water and land. You'll learn about the activities of the traditional fishermen as well as discovering and reporting which marine organisms are being sustainably harvested and which are being dangerously depleted.

The work you carry out will be rewarding and exciting and hugely beneficial to the Marine Park's conservation efforts, as well as being amazing fun! At the end of the day you will gain immense satisfaction from knowing that you have helped to save this precious marine wilderness, protecting it for future generations.

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Migrating Humpback Whales & Whale Sharks

Mafia Island is about as close as you can get to the quintessential Indian Ocean tropical paradise. The tiny island of about 40,000 is a friendly, laid-back place that has long been praised as a diver and sea angler's paradise.

Mafia's luxuriant mangroves, luminous sea grass beds and dazzling coral reefs play host to a multitude of tropical reef fish, thorny and spotted seahorses and four species of graceful and gentle sea turtles. Offshore there are dolphins and rays and the deeper waters are a regular stop off point for migrating humpback whales and giant whale sharks. You could experience all this when you join the Frontier camp on Mafia Island and learn to dive in the crystal clear, immaculate waters of Tanzania's exclusive Marine Park.

If you are joining this project between November and January then you may have the opportunity to conduct surveys on the transient whale shark population. You may be recording details of sightings and monitoring returning whale sharks. Volunteers may also have the opportunity to conduct awareness raising activities with tourists visiting Mafia Island.

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Dynamite Fishing Damaging Coral

Threats to the coastal environment on and around Mafia Island are on the up as unregulated tourism is on the increase and the level of the local population is rising. Increasing competition for food means that artisanal fishing techniques such as seine-netting become inadequate and inefficient, encouraging use of less discriminate catch practices such as dynamite fishing. Other threats include the over harvesting of octopus and sea cucumbers and the over collecting of shells and corals for the expanding marine curio trade.

Swim with Dolphins, Rays & Turtles

Your underwater exploration will involve you in mapping the incredible biodiversity of the coastal area and marine habitats. While diving you will locate and record spectacular coral reefs and survey dazzling reef fish and turtles. If you are there at the right time of year you may even observe marine mammals.

Discover Swahili Culture

Through participating in environmental awareness raising in local schools and community activities, you will experience the cultures and lifestyles of local peoples.

The time of year that you visit the project will greatly affect the type of work you are involved in as much of our research is heavily dependent on the season.


The marine research and conservation programme is run in association with the Mafia Island Marine Park. The project provides the local communities and government bodies with the information they need sustainably to manage this priceless marine ecosystem and preserve it for future generations. To gather the data needed you will dive, locate and map the extensive coral reefs and study the various communities existing on them.

Living and working in an internationally recognised marine protected area will give you access to a fantastic array of wildlife and ecosystems. You may have the opportunity to dive on habitats untouched by destructive fishing practices and help monitor the success of a variety of conservation methods. The data collected on our commercial fish surveys aids the marine park in maintaining the most up to date and dynamic management plans for the future of the region so that we can be confident that Mafia Island will remain a stunning destination for future generations.

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You will explore and record the living organisms that inhabit the luxuriant mangrove forests, dense seagrass beds and productive inter tidals in the area. To do this you will use a range of newly learned research skills and scientific techniques including: underwater visual census of reef and commercial fish such as trigger fish and parrot fish, assessment of algal and coral cover to determine the extent of coral bleaching and damage and line intercept transects for benthic life and indicator invertebrate species such as nudibranchs. You will observe the feeding habits and behaviour patterns of a range of marine life. You may even get to study the impact of dynamite fishing on the corals reefs, report the effects of global warming on marine communities or observe the impact of the marine curio trade on endangered marine invertebrates.

Whilst diving, you'll see an extraordinary array of animals from turtles to sea cucumbers and unicorn fish and spiny urchins to octopus. When you sail out each day on the Frontier boat to distant dive sites you may even be accompanied by dolphins. You may have the unique opportunity to swim or snorkel with whale sharks if visiting sites further afield. By the end of your project you will be expert at identifying many species of coloured and patterned reef fish as well as being an experienced and competent diver. Those joining the project for a short period of time may not be able to participate in a full range of project activities. Some project activities are seasonal.

You'll get immense satisfaction from having made a valuable contribution to the conservation of this untarnished marine wilderness. You will return home with the new friends you've made and a wealth of incredible photos, videos, stories and memories.

You'll find your team to be a fun, dynamic mix of ages and experiences with members who all share a passion about travelling in developing countries and saving endangered marine life. Your staff will be young, friendly individuals who are highly experienced in their field many of whom may also have volunteered on a Frontier project earlier in their career.

Fee Required


Training Provided

Housing Available

We welcome



International Volunteers

How To Apply