Dive into an OceanX Adventure! Marena Montoya and her BFF Aisha go on a brand-new ocean adventure using their scientific skills to solve another mysterious puzzle. Lucas' voice broke the silence. "Remember the lessons you learned on the OceanXplorer. Colin said always prepare for the unexpected..." I finished the sentence for him. "...and when it happens, don't panic. Just think your way through it." Science reporter and budding junior detective Marena Montoya comes to the rescue in the next adventure in the OceanX series. Marena has discovered an important clue about a treasure-laden Spanish galleon lost at sea centuries ago, but has no idea how she could search for the ship until a wild series of events lands her, and her older brother Lucas, straight into the hunt. Using her newfound skills from her time aboard the OceanXplorer, Marena bravely navigates the perils of deep-sea exploration, and learns the most important lesson of all—that there is more than one type of treasure. This page-turning adventure combines the scientific discoveries of the world-renowned OceanX project with an intrepid new heroine who learns the power of speaking up, asking questions, and learning from mistakes. MEET THE OCEAN EXPLORERS: 5th-grade junior journalist Marena, her BFF Aisha, and Marena’s teenage brother Lucas use critical thinking and sound science to solve exciting ocean mysteries. MENTORED BY OCEANX: Marena and Aisha are mentored by Dr. Anna Knowles, whose character is inspired by the real-life scientists of the world-renowned OceanX project. REAL SCIENCE: Each mystery is based on actual oceanic scientific research and discoveries, filled with facts about the ocean world. MIDDLE-GRADE MILESTONES: Once proud of her curiosity and endless questions, 11-year-old Marena is starting to feel self-conscious about calling attention to herself. With the encouragement of her teacher and mentor, she learns to embrace the qualities that make her special. COLLECT THE SERIES: Mystery at the Aquarium, Underwater Secret Agent, and Galapagos Island Hitch also available!

Pearl’s fear of sharks is not unfounded—but can she find a way to feel safe in this Mermaid Tales adventure? Late-breaking news from the Trident City Tide: There have been shark sightings in Trident City! No swimming alone! Pearl’s father even hires a Shark Guard to escort her to school. Pearl starts stirring up lots of trouble with anything that has to do with sharks, even denouncing the skeleton Kiki has in her room. And then, to make matters worse, Pearl accuses Kiki of stealing her precious pearl necklace! And though the undersea waters are indeed filled with danger, Pearl just might discover that true friends can provide a sense of safety!

Are you ready for an amazing adventure that will test your brain power to the limit, full of mind-bending puzzles, twists and turns? You have been summoned to Professor Fustigate's dusty study at the Ocean Explorers Museum. 300 years ago the pirate ship Shiver Me Timbers sank and the captain's logbook was found ashore. Ever since, explorers have tried to find the wreck. Just yesterday, Professor Fustigate discovered that if you can follow the coded clues found in the logbook, you will be lead to the wreck and its treasure. Only with your help can the wreck be found, you're being depended on to locate the treasure! Readers must use their problem-solving skills and geographical knowledge to navigate through four thrilling adventures. Geography Quest follows the popular Science and Rubik's Quest series. Questions are carefully chosen to address core geography subjects for the age group. Finding the answers enables readers to advance through the story, learning more about geography with every step they take. Clues are dotted along the way, and wrong turns will direct readers towards the right answer! A glossary explains geographical words and provides added reference material.

Sharks cause trouble in Trident City.

Welcome to "Deep Sea Danger." In this thrilling underwater adventure you are going to be asked many questions. Some of these questions will decide the fate of the main character-who just so happens to be you. Yes, you. As you will discover, you are the star of this book. So choose wisely. Act bravely. And you just might make it out alive... Welcome to the deep blue sea, where lost cities, deadly barracudas, desert islands and underwater kingdoms await... Enjoy your deep sea adventure!