An unscrupulous entrepreneur forces Hector's family to close their business, as he seeks to find a magic pearl. Hector decides to find a way to thwart his plans. When a greedy entrepreneur searching for a legendary pearl forces Hector's family to close their tourist expedition business in an Italian coastal town, Hector decides to thwart the man's plans and save the sea, his family, and his dream of becoming a deep-sea diver, just like his father....

When Harper Proulx and her newfound sibling travel to Hawaii to track down their sperm donor father, the man she discovers--a deep-sea diver obsessed with solving the mystery of a shipwreck--forces Harper to face some even bigger questions. Harper Proulx is convinced that without knowing her anonymous sperm donor father, she can't know herself. When a chance Instagram post connects Harper to a half sibling, she joins her newfound half siblings on...

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.

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 Franco Silva and his father help Todd Bardo arrange a salvage dive in Ecuador they are hopeful they will find sunken treasure.