Hailed as a hero for the new millennium, NUMA leader Kurt Austin must protect the seas’ delicate ecosystem from a fish-farming organization with big plans for their genetically-modified product in this #1 New York Times-bestselling adventure series.

A confrontation between a radical environmentalist group and a Danish cruiser leave many survivors trapped inside a sunken ship. But when the head of NUMA Special Assignments,

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Kurt Austin and the NUMA Special Assignments Team face a daunting task--saving all life on Earth--when an anti-globalization group decides to send a message to the world's industrialized nations by artificially triggering a polar shift.

A discovery by submersible designer Hannah Bryson suggests a possible cause of mythical Atlantis's mysterious demise that has potentially cataclysmic consequences for the modern world.

When Neil, Sam, and Biggs are captured by Captain Jolly, a pirate who needs their video-game skills to destroy the world, the Nerdy Dozen must save the day in an underwater adventure.

"An international research station in the Coral Sea comes under siege during a geological disaster that triggers massive quakes, deadly tsunamis, and volcanic eruptions. To stop the world from burning, it's up to Sigma Force to uncover a secret buried at the heart of our planet"--

When the Octonauts, a team of eight animal underwater explorers, meet a frowning fish, they try their best to make it smile.

The Octonauts use their underwater Octopod base to travel to the mysterious Sea of Shade to discover why all the world's shadows have gone missing and convince the Shade King to return the shadows.

The Krewe of Hunters must find an ancient shipwreck and save divers from the demons aboard, in book 7 of the fan favorite series from New York Times bestselling author Heather Graham. It is 1898. Bound for Chicago, the freighter Jerry McGuen goes down in Lake Michigan, taking with it every man aboard. But what other fate could befall a vessel carrying the ill-gotten sarcophagus of an Egyptian sorcerer? Now: A veteran diver and "ghost ship" expert...

In the midst of an international crisis, Heidi Milligan, a beautiful, brilliant American naval commander, accidentally discovers an obscure reference to the long-buried North American Treaty, a precedent-shattering secret pact between the United States and Great Britain. The President believes that the treaty offers the single shot at salvation for an energy-starved, economically devastated nation, but the only two copies plummeted into the watery...

Purports to be the journal of Zoticus de Lesseps, written on an ill-fated 1863 voyage accompanying Captain Nemo to explore the mysteries of the deep sea.