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Green sturgeon are highly adapted to conditions in the Bay Delta -- but those conditions are changing too fast for the sturgeon to keep up.
The splittail was once abundant. Now its numbers are dwindling. But it isn't protected by either the state or feds.
In 2010, foes of a controversial Delta beetle tried to strip it of its Federal protection. But wildlife advocates argued back -- and the science backed them up.
The Bay Delta's ecological productivity has dropped catastrophically. And the culprits live in the estuary in unimaginable numbers.
The more you study the Delta's sleek, silvery steelhead, the less you realize you know.
A fish, a frog, and a turtle have caused widespread damage to the Delta...and we brought them here on purpose.
Scientists differ over the degree of harm this fish might causing native wildlife, many Californians are happy to have a chance to see it. Especially steamed with ginger and lemongrass.
It's a complicated estuary where water from 75,000 square miles of California and sometimes Oregon drains into the Pacific, and it doesn't really have a name.
California's Delta is a nearly ideal place to grow many plants. Some troublemakers are taking advantage of that opportunity.
Despite rampant development, we still have a few pieces of the natural Los Angeles coast, because of fierce political battles to preserve it.
Some endangered species merit legions of squeeing fans on YouTube. One such ekes out a living beside San Francisco Bay.
It's no surprise that one of California's most endangered animals depends on damaged salt marshes: the California Ridgway's rail.