Wayne is searching for buried treasure sunk with a Spanish galleon off the Florida coast when a storm arises and his dolphin friend comes to his rescue.

When Dorothy Ann accidentally loses Jyoti's high-tech locket in the ocean, Ms. Frizzle's class travels down through the layers of the sea to retrieve it. Includes glossary.

After her beloved Gran dies, fifteen-year-old Liv goes to California to live with the father she has never known and must adjust to his gruff ways and his life as an abalone diver, so different from her life in New York City.

"DUBAI: An impossibility is being taken to the Middle East. The transport vessel Tonga is carrying a liopleurodon to the City of Gold. But while investors gawk at the prehistoric creature, any even more dangerous creature is beginning to stir. The megalodon shark that Jonas Taylor worked so hard to capture is coming out of it's drug-induced stupor and refuses to be contained. No both ancient creatures, older than mankind itself, are loose in the waters...