Along the Santa Ana River, where it empties into the Pacific Ocean, is nearly 400 acres of undeveloped land that will be turned into a public park.
The North Pacific right whale is critically endangered; according to NOAA's website, there are likely fewer than 500 remaining.
Of the many animals protected by the Endangered Species Act, there may be no other species more American than red wolf.
The bald eagle, American alligator and Louisiana black bear are just three of the nearly 300 species revived by the Endangered Species Act -- 50 years since it first took affect.
The U.S. Fish and Wildlife Service has delisted 21 species from the Endangered Species Act due to extinction, the agency announced.