The Tiger's Nest (Explorer Academy Series #5)

Cruz Coronado and his fellow explorers are jolted from their normal routines at Explorer Academy's classroom at sea and thrust into survival mode as the adventure continues in the fifth book in the thrilling middle-grade fiction series.

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...