AstroNuts Mission Two: The Water Planet is the second book in the laugh-out-loud series by children's literature legend Jon Scieszka. The book follows a new mission, where AstroWolf, LaserShark, SmartHawk, and StinkBug must find a planet fit for human life after we've finally made Earth unlivable. After they splash-land on the Water Planet, they find power-hungry clams, a rebellious underwater force, and a world full of too-good-to-be-true. Can this aquatic world really be humans' new home? And why are these clams so eager to swap planets?