
Access to this video is a benefit for members through PBS Passport.
Back to Show
Changing Seas
California Sea Otters: Life on the Edge
Season 16
Episode 1604
Adored by many for its cuddly appearance, the threatened southern sea otter is a voracious predator that needs to eat the equivalent of 25% of its body weight a day to survive. Once nearly hunted to extinction, this endearing marine weasel has made a slow comeback on California’s central coast, demonstrating its role as an ecosystem engineer in the process.
Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Support Provided By

Unlock with PBS Passport
26:47
The deep-sea submersible Alvin brings explorers to extraordinary places.

Unlock with PBS Passport
26:42
Scientists study salt marshes along scenic coastlines in the South.

26:42
Scientists team up with anglers to study the survival rates of the fish.

Unlock with PBS Passport
26:53
Scientists study what makes certain corals more resilient than others.

Unlock with PBS Passport
26:42
Scientists monitor penguin populations and study the animals’ interaction.

Unlock with PBS Passport
26:42
Scientists study the devastating impacts of the Deepwater Horizon oil rig disaster.

Unlock with PBS Passport
26:42
Scientists set out to uncover the mysteries of blue holes.

Unlock with PBS Passport
26:42
Experts study the purpose of a male humpback whale's song.

Unlock with PBS Passport
26:42
Stony Coral Tissue Loss Disease is devastating Florida’s fragile coral reef.

Unlock with PBS Passport
26:47
Scientists work to understand what causes toxic algal blooms.

26:42
Discover the Cordell Bank, a magical underwater island few people have ever heard of.

Unlock with PBS Passport
26:42
Scientists study tarpon, bonefish and permit to better understand their behaviors.