Jean-Michel Cousteau: Ocean Adventures | PBS

They might be tiny, but nudibranchs can pack a poisonous punch. Learn more about these extraordinary creatures.

Coral reefs often make for spectacular diving, and shipwrecks can become vibrant habitats. Explore the area around an underwater volcano with the Ocean Adventures team.

Climate change is already affecting polar bears, walruses, belugas and arctic foxes. Find out how.

Jean-Michel Cousteau and his team sail into the "Great Pacific Garbage Patch" while shooting "Voyage to Kure."

Whiskers. Flippers. Big soulful eyes. Underwater acrobatics. Check out how "common seals" of Monterey Bay are anything but "common," at least when it comes to cuteness!

Sea otters, urchins and kelp, oh my! Explore the delicate balance of life in an emerald forest.

It's hard to be a bird when your wings don't work right! Find out how the Ocean Adventures team comes to the rescue of Lanai, a fledgling albatross hatched on Kure, a remote Hawaiian island.

The Amazon is the most powerful of the world's rivers, and its rapid transformation will alter the global climate. Emptying into the great Atlantic Ocean, it flows through the world's largest tropical rainforest where evolution has gone wild, creating the greatest biodiversity of any area on the planet.

In the pink! Find out why pink dolphins of the Amazon are pink, how their sonar has evolved for conditions in the Amazon, and what they do with their ferocious teeth.

Chasing clues from their birthplace in Baja California, Mexico, to their feeding grounds in the Artic Circle, Jean-Michel Cousteau's team follows gray whales to observe, document and understand the variety of natural and man-made hurdles that these creatures must overcome in order to survive. The amazing expedition unlocks seldom-seen views of tragedy and triumph along a route nearly 12,000 miles long. Watch on July 19, 2006 and find out more about their migration at: pbs.org/oceanadventures.