Want to watch better-quality PBS Video? Sign in to access higher-quality streaming!

By signing in, you are authorizing PBS to share your email address with your local PBS station to send you periodic communications about station events, services and support. Any other uses of your information by PBS are governed by PBS’s Privacy Policy.

Closed Captioning Settings
×

Preview

Captions look like this

Captions size

  • 15

Captions font family

Edge style

Captions color

Background color

Window color

Text Opacity

  • 100%

Background Opacity

  • 100%

Window Opacity

  • 0%
  • Save Settings
  • Reset

CHANGING SEAS

Sentinels of the Seas

  • Aired: 06/07/2010
  • 26:42
  • Rating: TV-G
One of Florida's most beloved marine mammals is the bottlenose dolphin. The animal's charismatic smile belies the silent threats lurking in its ocean home. Many Florida dolphins are showing disturbing signs of immune system dysfunction and disease, which may be linked to contaminant exposure.
Embed Options
Close ×
Sentinels of the Seas image
Sentinels of the Seas
Signs of disease in dolphins. Problems may be linked to contaminants and pollutants.
Width:
Height:
Please copy this text to your clipboard.
Problems Playing Video ?
Major funding for this program was provided by the Batchelor Foundation, encouraging people to preserve and protect America's underwater resources.

PBS KIDS

Watch videos from your favorite PBS KIDS shows with the PBS KIDS Video app for your tablet or phone.

Downton Abbey Collection

Bring home the complete collection: DVDs, Blu-rays, books, gifts and more. Visit ShopPBS.

Donate

WPBT2 helps all of us explore new worlds and ideas. Give Now