Blue World

Jonathan travels to Mexico for an up-close encounter with Bull sharks and then to NASA's Neutral Buoyancy Lab in Houston where astronauts train underwater for space walking.

On a trip to Hawaii, Jonathan meets the critically endangered Hawaiian Monk Seal, then he travels to Bonaire to dive with a group of wounded veterans learning to dive.

Jonathan visits shipwrecks in Florida to see how they turn into artificial reefs. Then he learns to freedive with world-record freediver Karol Meyer.

Jonathan travels to upstate New York to learn how biologists are working to save the sturgeon in the St. Lawrence river. Then he visits an underwater farm in Key Largo.

Jonathan learns how they train Beluga whales at the Mystic Aquarium, explores a deep blue hole in the Bahamas, and swims with wild Spinner dolphins in Hawaii.

Jonathan visits Aquarius Reef Base—the world’s only undersea lab where scientists live in saturation for days or weeks at a time, then explores the fascinating world of skates and rays.

Jonathan joins a veteran cave explorer to plumb the crystal clear water in the depths of Stargate Blue Hole in the Bahamas. Then he explores the biology of sponges.

300 miles off the coast of Costa Rica, Jonathan witnesses a shark hunting ritual. The he explores kelp forests in California. Finally, Jonathan explores shipwrecks in the St. Lawrence river.

Jonathan joins a team of underwater archaeologists on a project to excavate the remains of Blackbeard the Pirate's ship.

Jonathan travels from the St. Lawrence river to the Caribbean, looking at invasive species and their effect on the environment.