On an island nation in the Indian Ocean, the explorers venture through a vast underwater world and take part in a friendly robotics competition. But the tides of good fortune change quickly. Suddenly, Team Cousteau jumps into action to rescue a faculty member from the brink of death. Meanwhile, the team follows the Cruz's mother's clues to a magnificent tomb and center of spirituality precariously perched on the side of a cliff. There, Cruz is confronted...

It was only a few days ago that Tess Biedermann, Theo Biedermann, and Jaime Cruz, along with a mysterious figure from the past, managed to survive an assault on the location of the latest clue in the Morningstarr cipher -- and, in the process, made a shocking discovery about their own connection to this one-hundred-sixty-year-old enigma. Now the friends are divided. Tess and Theo have no idea what the photo they found in Greenwood Cemetery means,...

"The dense, steamy rainforests of northern Borneo are some of the oldest and most magical in the world. Under the shade of the towering tree canopies, majestic elephants and orangutans roam. However, Cruz Coronado is more focused on a tiny leech with a surprisingly painful, slow-healing bite. As he inches closer and closer, he wonders if what he discovered at the top secret Archive is true ... In this sixth installment in the Explorer Academy series,...