
Access to this video is a benefit for members through PBS Passport.
Back to Show
Watch Preview
Changing Seas
Beneath the Bridge
Season 8
Episode 804
The Blue Heron Bridge in Riviera Beach, Florida is known as one of the best shore dives in the United States. Even though at first it appears as an unlikely dive site, it is home to a rich variety of marine life, ranging from tiny nudibranchs to manta rays. Underwater photographers are documenting what lives beneath the bridge, and a scientist is studying how two species of octopus co-exist there.
Support Provided By

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.

Unlock with PBS Passport
26:42
Scientists work to save crocodiles through research and conservation.

Unlock with PBS Passport
26:42
Deep underwater, on a shipwreck near Key West, lives a tiny potential new threat.

Unlock with PBS Passport
26:43
Modern technology is making it possible to correlate dolphin sounds and behavior.

Unlock with PBS Passport
27:13
Scientists experimant to see if giant manta rays are impacted negatively by microplastics.

Unlock with PBS Passport
27:13
Changes to the ocean environment affect the way carbon is cycled through the seas.

Unlock with PBS Passport
27:13
Lake Okeechobee, once the blue heart of Florida, now has putrid mats of blue green algae.

27:18
Discover ways to increase fish production in a sustainable manner.