The secret explorers jump into action to save a pod of humpback whales, but when Connor and Roshini's submarine malfunctions, the explorers could be the ones in trouble.

Presents a history of the submarine, discusses the different ways they are used, and recounts true-life adventures, in a book with fold out pages.

A Ship Possessed pits superhuman powers against one man's courage and faith. Fifty years after it was lost at sea, the USS Triggerfish washes up on the California shore. When retired Navy Captain J.D. Stanton is called into duty to investigate, he begins to see disturbing evidence that someone, or something, is aboard the curiously well-preserved World War II submarine. But the Navy is not the only one interested in it. A madman bent on world domination...

"Provides an overview of the design, uses, weapons, and equipment of U.S. Navy submarines"--Provided by publisher.

Berkeley and her best friend, Garth, live on an old cruise ship, scavenging for supplies from the drowned cities left behind on the ocean floor after the sea swallowed up all the land. They think they've seen every kind of aquatic creature, but they never expected to find sea monsters... After awakening a Hydra, Berkeley and Garth are sent to live on a submarine, where they study and hunt sea monsters. But the Hydra wants revenge on their home ship--and...

"On December 7, 1941, even as Japanese carrier-launched aircraft flew toward Pearl Harbor, a small American cargo ship chartered by the Army reported that it was under attack from a submarine halfway between Seattle and Honolulu. After that one cryptic message, the humble lumber carrier Cynthia Olson and her crew vanished without a trace, sparking one of the most enduring nautical mysteries of the war. What happened to the ill-fated ship? What happened...