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More species live in oceans than on land

© WWF Tanzania

With increasing human populations and encroaching coastal development, the long-term survival of marine ecosystems - and the many people that rely on them - are under threat. Contributing factors include over fishing, pollution and climate change.


Covering more than two thirds of our planet, oceans produce 70% of our oxygen and absorb vast amounts of carbon dioxide. They also drive the Earth's weather systems. More species live in the oceans than on land, including iconic sharks, turtles and whales. The marine environment also holds great economic value, with coastal goods and services contributing a third to Tanzania's gross domestic product.

Did You Know

Tanzania's coastal ecosystem is a home to a wide range of important and valued species including an estimated 150 species of coral in 13 families, 8,000 species of invertebrates, 1,000 species of fish, 5 species of marine turtles and uniquely the whale sharks

© WWF Hive

We are working towards creating healthy oceans which support abundant biodiversity. sustainable livelihoods and thriving economy. To achieve this, WWF engages with governments, business, coastal communities and seafood consumers to help develop and integrated approach to look after our oceans. We also ensure adequate planning of the many shared uses of our marine space - including protecting special nature reserve areas of the sea.

What Can you Do?

One of the most visible threats to the ocean and its creatures is the huge amounts of plastic wasted found today. You can help by stopping the use of single use plastics today

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