Almost everywhere in California, salmon are on the decline. But in Putah Creek—a restored stream running through the ...

It’s a vast island in the Indian Ocean off the east coast of Africa ... but are slowly destroying the habitat of the fish they rely on. This clip was originally from the series Deadly Dilemmas.

But, worldwide, human activities are responsible for the loss of huge swaths of these valuable habitats. WWF is working with partners to prioritize conservation ... and sustainable use of mangroves.

He added, "We have seen species move into different areas of the ocean in the past ... Future climate-driven habitat loss and range shift of the Critically Endangered whitefin swellshark ...