"Earth's oceans are gull of mighty sharks. Their speed, stealth, and strength make them the perfect predators. from giant great whites to sneaky goblin sharks, these creatures rule the waters. Are you ready to dive in and swim with them?"--Back cover.

This second book in the National Parks Mystery Series takes young readers, ages 7 to 12, on a fast-paced adventure set in Colorado's Great Sand Dunes National Park. Before Jake's grandfather died, he was on the trail of a centuries-old mystery. Jake has been entrusted to that mystery leaving behind a set of hidden codes, riddles, coordinates, and other clues that lead Jake and his friends on a scavenger hunt through ten of America's most treasured...

Describes the sport of sailing on sand including information about its history, rules, techniques, equipment, safety tips, and competitions.

"Describes sand, silt, and mud and their role in the rock cycle"--

When his friend, Floyd Collins, becomes trapped in a cave in Kentucky in 1925, ten-year-old Arly places himself in great danger while trying to help with the rescue operation.

Covers handicrafts made with sand, earth, rock, mud, clay, plaster, fibers, straw, and more.