4x1 - Day at the Aquarium

October 4, 2014

Jeff takes his two young daughters on an exploration of the Georgia Aquarium. They meet African penguins, check on the health of bottle-nose dolphins, and feed three ton whale sharks.

4x2 - The Island of Tasmania

October 11, 2014

Jeff travels to Trowunna Wildlife Park in Tasmania to uncover the ancient secrets of this Australian island which separates from the larger mainland.

4x3 - The Whales of Hawaii

October 18, 2014

Jeff joins a team of marine biologists racing to rescue the magnificent whales of the Hawaiian Islands.

4x5 - Best Of: Reptiles

November 1, 2014

4x6 - Snake, Rattle and Roll

November 8, 2014

Host Jeff Corwin explores his home state of Massachusetts on a mission to help save endangered timber rattlesnakes. Jeff captures wild snakes for research, learns about the amazing breeding programs underway to increase snake numbers in the wild, assists in critical snake surgery, and watches the next generation of timber rattlesnakes enter the world.

4x7 - Journey Across the Pacific

November 15, 2014

Jeff travels from the coast of California to the cliffs of Alaska, from the volcanoes of Hawaii to the coral reefs of Australia. They are on his epic journey to explore the Pacific Ocean. Along the way, he comes face to face the mysterious two-spot octopus, helps unravel the communication of humpback whales, and participates in an important health assessment of a Southern sea otter.

4x8 - Best Of: Birds

November 22, 2014

Jeff is on an adventure across the Pacific Ocean to unravel the mysteries of sea birds. In Alaska, he visits a family of puffins that use their wings to fly underwater, and helps nurse an injured bald eagle back to health. In Hawaii, Jeff learns about the heroic efforts to save a community of albatross from predators, and in New Zealand, he explores the world of little blue penguins that build their nests on the ocean cliffs.

4x9 - Best Of: Southern Africa

January 11, 2015

Jeff explores southern Africa on an adventure from the shoreline of Cape Town to the Okavango Delta, Botswana. He meets the dedicated biologists fighting to save endangered African penguins, discovers a hidden lagoon of massive hippos, and comes face to face with a deadly spitting cobra.

4x10 - Care to Coexist

January 17, 2015

Jeff investigates the pollution levels in Australian bull sharks, meets a Puerto Rican parrot that almost became extinct and learns about the challenges facing rare turtles in his native Massachusetts.

4x11 - Best Of: Babies

January 24, 2015

Jeff pays tribute to the smallest and cutest members of the underwater animal kingdom throughout this entire episode.

4x12 - Santa Catalina

January 31, 2015

Jeff travels off the shore of Southern California to the breathtaking island of Catalina. Jeff dives through towering kelp forests and comes face to face with California sea lions. He later explores the mysterious and critically endangered Catalina Island's foxes.

4x13 - Plight of the Condor

February 7, 2015

Jeff travels to the Pacific coastal mountains of Big Sur, California, to help rescue endangered condors.

4x14 - Amazing Mantas

February 14, 2015

Jeff dives alongside manta rays under the cover of night, explores a hidden Manta population off the coast of Maui, and returns back to Atlanta, Georgia for an up-close look at the largest manta ray in Georgia Aquarium.

4x15 - Eye of the Tiger Shark

February 21, 2015

Host Jeff Corwin is on an epic adventure to the islands of Hawaii to save 14-foot tiger sharks! Working with expert biologists and the very latest technology, Jeff is on mission to protect the sharks from the tourists - and the tourists from the sharks!

4x16 - Best Of: Sharks

April 25, 2015

Host Jeff Corwin is on an epic journey from Australia to Hawaii exploring the mysterious world of sharks! Jeff works alongside expert biologists to unlock the secrets of deep-water sixgill sharks, massive sand tiger sharks, powerful bull sharks, and so much more!

4x17 - Elephant Seals

May 2, 2015

Jeff travels to the west coast of Central California to connect with the conservation about elephant seals.

4x18 - Family Ties

May 9, 2015

Host Jeff Corwin explores the exciting and unexpected ways different animal species care for their young. Jeff connects with a pregnant beluga whale and a pregnant dolphin, helps conservationists protect a family of peregrine falcons, and discovers the surprising behaviors of a mother octopus.

4x19 - Best Of: Atlantic

May 16, 2015

Jeff is on an epic adventure across our planet's second largest ocean to discover some of the amazing species that call the Atlantic Ocean their home. He helps rescue sick and injured dolphins off the coast of Florida, connects with mighty Manatees in the Caribbean Sea, battles to protect the fragile Tuna populations of New England, and travels to the coast of South Africa to rescue the endangered African Penguin.

4x20 - The Predators of Shark River

May 23, 2015

Jeff travels to Florida's Everglades teaming up with expert biologists for a mission to help rescue the Everglades' ecosystem and come face to face with its most important aquatic predators.

4x21 - Asian Elephants

May 30, 2015

Jeff is on an epic adventure to Thailand on a mission to connect with the most iconic animal, an Asian Elephant. He visits The Anantara Elephant Camp where many rescued elephants have found a second chance at survival as well as assisting the vet staff treat injured elephants, participates in cutting edge elephant research, and has a fun encounter with a one year-old baby elephant.

4x22 - Thailand Sea Turtles

June 6, 2015

Jeff travels to the beautiful country of Thailand to help save endangered sea turtles. He helps feed orphaned baby turtles, preforms critical exams on one of the rarest turtle species on earth by working alongside expert biologists.