Tuna are among the most commercially valuable fish on the planet. The Atlantic bluefin is a highly sought-after delicacy for sushi and sashimi in Asia—a single fish has sold for over $700,000! Driven by such high prices, fishermen use even more refined techniques to catch tuna. And the fish are disappearing as a result.

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Dugongs are threatened by sea grass habitat loss or degradation because of coastal development or industrial activities that cause water pollution. If there is not enough sea grass to eat then the dugong does not breed normally. This makes the conservation of their shallow water marine habitat very important. They also often become victims of bycatch, the accidental entanglement in fishing nets.

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Sea turtles are a fundamental link in marine ecosystems. They help maintain the health of sea grass beds and coral reefs that benefit commercially valuable species such as shrimp, lobster and tuna. Sea turtles are the live representatives of a group of reptiles that have existed on Earth and traveled our seas for the last 100 million years. Turtles have major cultural significance and tourism value.

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Whales are at the top of the food chain and have an important role in the overall health of the marine environment. Unfortunately their large size and mythical aura does not protect them; six out of the 13 great whale species are classified as endangered, even after decades of protection.

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