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Why Biodiversity Matters

Luangwa River in Zambia | May e-newsletter
Free-flowing rivers are vanishing
Dams, hydropower, roads, and other development affect two-thirds of the world's longest rivers, according to a groundbreaking study by WWF and partners. View our maps of the world's last free-flowing rivers and see how you can help.
 Explore the river maps ► 

Bald eagle in Bristol Bay, Alaska
Deadline approaching: Stop Pebble Mine
The plan for Pebble Mine will devastate the pristine ecosystem of Bristol Bay, Alaska. Speak up now to save its waterways and wildlife.
 Take action now ► 
Young Bornean orangutan
Why biodiversity matters
What does "biodiversity" mean, and why is it so important? Also, see why a new report says around 1 million animal and plant species may face extinction.
Mug of coffee
What's in your coffee?
Explore where your coffee comes from, how climate change is affecting the industry, and how a WWF initiative helps small coffee farmers.
Tuna port
Trailblazing women help improve tuna fishing
In Ghana, WWF advocated for women to have access to jobs analyzing digital information from tuna boats. Today, four women are working to help us better care for our seas.
Bison in Yellowstone
A zero waste adventure in Yellowstone
We're tackling trash head on with a pioneering zero waste trip in Yellowstone. Join our special departure in July 2019.
close-up of an animal
Can you tell?
Can you tell what animal is shown in this close-up?
Take a guess ►
Atlantic bluefin tuna, underwater
Species spotlight: Atlantic bluefin tuna
Bluefin tuna are a top predator in the marine food chain, helping to maintain a balance in the ocean environment. One of the largest bony fishes, they can weigh more than 1,000 pounds. Their large, torpedo-shaped bodies are dark blue to black on their upper surface and silvery underneath.
Letter A iconSpecies
Thunnus thynnus

VUStatus
Endangered

Range iconRange
Subtropical and temperate waters of the North Atlantic Ocean and the Mediterranean and Black seas

threats iconThreats
Illegal fishing and overfishing

info iconInteresting info
Bluefin tuna are warm-blooded. They retain the heat they produce as they swim, which allows them to tolerate colder waters.

Blue whale wallpaper thumbnail
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Fish T-shirt
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Aerial view of landscapes in the Bristol Bay watershed: mountains and wetlands
Pop quiz
If developers dig the one-mile-wide and quarter-mile-deep Pebble Mine in Bristol Bay, Alaska, how many acres of wetlands would be destroyed?
Up to 700About 1,800
Nearly 2,600More than 3,500

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