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

Nudibranchs

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.

Shipwreck

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

A Warmer World for Arctic Animals

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

Trash on the Spin Cycle

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!

Seal Charisma

In the wild, mating is anything but tender. Watch how one shark couple's attempt at mating leads to another shark's dinner.

It's a Shark-Eat-Shark World

Wonder

If you're a sea star, a second stomach comes in handy if you're after a meal larger than your mouth. Don't miss one sea star ejecting its stomach outside its body in order to chow down.

The Two-Stomached Wonder

Watch scenes from a night of love and death among opalescent squid in the Channel Islands. Warning: stunning underwater footage is just a click away...

Squid Spawning

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

Secrets of the Kelp 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.

Lanai the Albatross

Jean-Michel Cousteau and his expedition team set sail to explore dangerous and spectacular locales across the globe to reveal the oceans' mysteries in "Jean-Michel Cousteau: Ocean Adventures." Find out more about this PBS series at: pbs.org/oceanadventures.

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Matching wetsuits, underwater photography, and pirates.  This show is amazing.

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Jean-Michel Cousteau and his expedition team set sail to explore dangerous and <br>spectacular locales across the globe to reveal the oceans' mysteries in "Jean-Michel Cousteau: Ocean Adventures." Find out <br>more about this PBS series at: <a href="http://pbs.org/oceanadventures" rel="nofollow" target="_blank">pbs.org/oceanadventures</a>.

Jean-Michel Cousteau: Ocean Adventures | PBS

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.

Pink Dolphins of the Amazon

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.

Return to the Amazon

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.

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: <a href="http://pbs.org/oceanadventures" rel="nofollow" target="_blank">pbs.org/oceanadventures</a>.

Gray Whale Obstacle Course

Jean-Michel Cousteau uncovers the shocking story of the worldwide extermination of sharks and learns that sharks have more to fear from humans than we do from them. The precipitous decline of sharks, long maligned as man-eaters, could affect many other species in the food chain, as Cousteau's investigation reveals.

Sharks at Risk

The best episodes for anyone looking to learn more about topics such as happiness, fulfillment, depression and psychology/mental health in general. With interviews with industry experts, personal stories of individuals, this topic has lessons applicable to everyone. Add episodes you're interested into your queue below!

Best Episodes on Mental Health, Emotions & Thoughts

The best podcasts about ourselves as well as the world through the lense of Science. Specific topics include things about our brain, emotions to biology, physics and more!