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The Endangered Species Act (ESA) was signed into law on December 28, 1973 by President Nixon. Over 2,000 species are currently on the ESA, and they are separated into "Threatened" and "Endangered"...
At the ends of the Earth, life thrives despite extreme conditions. In the Arctic and Southern Oceans, organisms have evolved adaptations to cope with year-round cold and six months of darkness. But...
Phoenix swims in George’s Bank, off the coast of New England, on March 13, 2009. More about whales can be found in our Tale of a whale featured story .
Sarah Gotheil, from IUCN Global Marine Programme , snapped this photo in the course of her research into fragile species and ecosystems. A new project led by IUCN will unveil the mysteries of...
Sea turtles face many obstacles throughout their lives—net entanglement, light pollution, mistaking plastic for food—among the many that are caused by humans. Get a glimpse of what goes on behind-the...
A young Kemp's ridley sea turtle ( Lepidochelys kempii ) recovers at the Audubon Aquarium of the Americas, after the 2010 Gulf of Mexico oil spill. Turtles were cleaned and nursed back to health with...
There were fewer than 450 North Atlantic right whales in 2006. Yet it has been illegal to hunt them since 1935. Why haven’t populations increased? Traits that made right whales easy to hunt make them...
Two North Atlantic right whales ( Eubalaena glacialis ) swim at the surface of the water. Learn more about this species in the North Atlantic Right Whale section.
The Kemp’s ridley is a “riddler” among sea turtles . Although the species was initially recognized in 1880, scientists didn't know where it nested until 80 years later, when a film documenting about...
Phoenix is seen skim feeding off the coast of Maine in August 2004. More about the right whale can be found in our Tale of a Whale featured story .
Watch a recorded webcast about the latest efforts in Greece to study and save the critically endangered Mediterranean monk seal. Centuries of human exploitation and habitat destruction have caused...
A manatee swimming in shallow waters. The West Indian manatee is listed on the IUCN's Red List of Threatened Species as Vulnerable. More about mangroves can be found in our Mangroves featured story .
Staghorn (seen here) and elkhorn corals are listed as Threatened under the Endangered Species Act. They are the only coral species currently listed, but 66 other coral species have been proposed for...
Since 1987, researchers have been tracking Phoenix, one of the last North Atlantic right whales living today. It's estimated that there are fewer than 500 of these whales alive today. Read her story...
Phoenix’s mother, Stumpy (#1004), was killed in a collision with a ship near Virginia in February 2004. She was pregnant with her sixth known calf. More about whales can be found in our Tale of a...
A Florida manatee, Trichechus manatus latirostris , swims down a narrow channel into a freshwater spring late in the day.
CREDIT: Wikimedia User “Fisherman” Because of consumer demand for sashimi (a fresh raw seafood dish), the fishing pressure on Atlantic bluefin tuna is extraordinarily high. The sale of a single...
In 1996, at age nine, Phoenix has her first calf (North Atlantic right whale #2605) off the southeast coast of Florida. More about the right whale can be found in our Tale of a Whale featured story .
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