Avis Dolphin's hesitation about traveling on the Lusitania disappears once aboard the ship, where she meets a professor who tells her stories about the magical island of Foula.

A pirate Pete and his mates travel the sea in search of a buried treasure, encountering a musician sea monster along the way.

While Sharkey struggles to overcome the lie on which his charmed life is based in order to meet the challenges of a tragedy, Petrel, Fin, and the crew of the Oyster confront the Devouts to restore lost knowledge to the world.

Living on an ancient icebreaker in a war-stricken world ruled by Anti-Machinists, twelve-year-old Petrel hides a stowaway only to discover that her new friend has been sent to destroy a secret object.

In 1887, the social-climbing Cranstons voyage from New York to London, where they hope to find a husband for their awkward older daughter, secretly accompanied by Helena and her mouse siblings, for whom the journey is both terrifying and wondrous as they meet an array of titled humans despite their best efforts at remaining hidden.

After their father disappeared and the Admiralty questions them about his whereabouts, twins Will and Annalie set out on a sailboat to find him, with only a single clue about his destination and no idea about the dangers of sea travel.

After being jilted by her ex-boyfriend and best friend, Jade couldn't be more ready to embark on the adventure of a lifetime: 11 countries in 4 months, all from the luxurious Campus on Board ship. She is happy to wedge an entire globe between her and the people who broke her heart. When Jade discovers the backstabbing couple are also setting sail, her obsession with them festers into a shocking murder. As their friends begin to drop like flies, Jade...

Excited to board the Titanic with his aunt and little sister, ten-year-old George begins to explore the ill-fated ship's first-class storage cabin when the ship is rocked by a collision with an iceberg and begins to sink.