Their magic tree house takes Jack and Annie deep into the sea, where they meet up with dolphins, sharks, and octopi as they search for the answer to an ancient riddle.

"Mouse agents Bernie and Jarvis are back in this underwater adventure where they must work on a submarine to keep a powerful energy source out of the clutches of evil"--

Bitty Bot is initially unhappy while on vacation at the beach with his family until he makes two new friends and they build a submarine, setting off for adventure under the ocean.

Tom Swift must rescue his father when the latter's submarine loses contact with the Swift Enterprises research vessel. Tom, Bud, and Yo are on the S.S. Nestor, a Swift Enterprises research vessel, to witness Mr. Swift testing his submersible, the Verne-1. Mr. Swift plans to use the Verne-1 to place a network of seismometers on the sea floor to detect underwater earthquakes, volcanic eruptions, and other phenomena that might generate tidal waves on...

When thirteen-year-old Max Tilt stumbled across his great-great-great-grandfather Jules Verne's unfinished, unpublished manuscript, The Lost Treasures, he thought he had the answer to all his problems, but nothing in life is ever that easy. With his mom's illness getting worse again, Max needs to figure out a way to save his family--now more than ever. So Max and his cousin Alex revisit The Lost Treasures, and they find a clue that just might be the...

When thirteen-year-old Max Tilt happens upon his great-great-great-grandfather Jules Verne's unfinished, unpublished manuscript, The Lost Treasures, he doesn't realize that he's found the answers to all his problems. And Max has a lot of problems--his mother is sick, his father is out of work, and his home is about to be foreclosed on. But when Max and his cousin Alex discover that Verne's last work reveals everything he wrote was fact, not fiction,...