Invites readers along on a journey beneath the ocean's surface, explaining the technology for exploration and the kinds of animals found at different sea levels.

"To stop the world from burning, it's up to Sigma Force to uncover a secret buried at the heart of our planet. The Titan Project-an international research station off the coast of Australia-discovers a thriving zone of life in an otherwise dead sea. The area teems with a strange bioluminescent coral that defies science, yet holds great promise for the future. But the loss of a military submarine in the area triggers a brutal attack and sets in motion...

When the Octonauts meet a giant goldfish who can't stop growing, they find themselves on a quest for a mysterious hidden ocean.

"Shipwrecked! is an adventure-filled nonfiction book for young readers about the most captivating shipwrecks from history. Combining new research, stunning archival material, and vivid storytelling, Shipwrecked! dives deep into the world of marine archaeology and shows young readers what each discovery reveals about the world before our time"--

Join Marina as she learns to face her fear of the ocean and become as brave as she imagines her beloved mermaids. With beautiful illustrations and the timeless lesson of the value of diving into new experiences, Marina and the Mermaids is the perfect story for young explorers.

Alvin Submersible, a deep-sea vessel that can sink miles below the surface, takes readers on a tour of the ocean floor where they will explore underwater volcanoes, discover lost hydrogen bombs, hear about storied shipwrecks and meet hundreds of new species living far beneath the waves.

Explore 100 breathtaking scuba diving sites around the world--from the cenotes of Mexico to the best wreck in Micronesia--through stunning National Geographic photography, expert tips, and cutting-edge travel advice.

Saltwater crocodile: A giant saltwater crocodile wanders into freezing waters so the Octonauts try to return the predator to its warm water home -- Decorator crab: When important objects go missing from their ship, the Octonauts stake out the thief who turns out to be a decorator crab, stealing their things to decorate his shell -- Giant spider crab: Kwazii is frightened when he spots a giant underwater spider, but it turns out to be a very old spider...

"Filled with compelling stories, expert advice, and stunning National Geographic photography, this comprehensive guide features extraordinary destinations for divers who like to travel, divers traveling with non-diving companions, and travelers who are passionate about the ocean. Dive travel experts Carrie Miller and Chris Taylor journeyed to 50 inspirational locations around the world--spending more than 250 hours underwater in just 14 months--to...

When the shadows in the ocean go missing, the Octonauts, a team of eight animal underwater explorers, must travel to the Sea of Shade to find them.