A strange glowing stone picked up on a sea voyage captivates a ship's crew and has a terrible transforming effect on them.

Having heard about the sea and longed to see what it is like, Little Rabbit receives an unexpected gift from a seagull.

After finding a map in a bottle, best friends Kondo and Kezumi build a boat and set out to explore the islands near their own.

When best friends Kondo and Kezumi return home from their island adventures they discover something unexpected occupying their tower.

Mr. Fish and an increasing number of sea creatures investigate, then decide how to deal with, a huge mess in the ocean, in a story that includes tips for the reader to help clean up and protect the ocean.

An inquisitive fox named Marco and a bored flock of pigeons join the crew of deer Captain Sylvia, setting sail in her antlered ship in search of a wonderful island and finding friendship on the way.

Young Poseidon must overcome his fear of the sea and its creatures to save a fellow Olympian. With Cronus and the other Titans in pursuit, and various monsters before him, young Poseidon must overcome his fear of the sea and the creatures that lurk in it in order to save a fellow Olympian.

"Narwhal and Jelly... and Otty?! Exuberant Narwhal and skeptical Jelly test the waters of adding a new friend to their pod when they meet Otty the super-adventurous otter in the fourth book of this blockbuster early graphic novel series! Dive into three new stories about the joy of adventure and the power of friendship! In the first story, Otty the otter makes her debut splash; while Narwhal greets her with immediate enthusiasm, Jelly's not so sure...

When the Octonauts, a team of eight animals that explores the ocean, help a lonely monster, everyone learns the value of friendship and individuality.

Otto and Uncle Tooth, detectives, investigate a series of shipwrecks, which brings them in touch with the dangerous Sid Rat.