An abridged version of the nineteenth-century tale of an electric submarine, its eccentric captain, and the undersea world.

NUMA operative Kurt Austin takes on a madman fronting as an evironmentalist in this #1 New York Times-bestselling series.
Sixty years ago, an eccentric Hungarian genius discovered how to artificially trigger such a shift in the polar ice caps, which could cause massive eruptions, earthquaks, and even climate changes. But then his work disappeared, or so it was thought. Now, the charismatic leader of an antiglobalization group...

Readers make choices that determine the outcome of the story when, while exploring the seas for the lost continent of Atlantis, they are separated from their diving vessel.

Danny Dragonbreath and his friend Wendell get an up-close underwater tour of the Sargasso Sea from Danny's sea-serpent cousin, encountering giant squid and mako sharks--and learn about standing up to bullies in the process.

A team of divers use their submarines to search for a sunken ship full of lost treasure.

"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...