Sage is used to being the fastest runner, the quickest climber, and the strongest swimmer around. And she's also used to taking charge. But when the second race course has the red team diving underwater to explore the Great Barrier Reef, it's trusting her teammates that matters most. It's sink or swim time....Each chapter in this action-packed adventure series is bursting with totally true facts about wild and wonderful creatures, dangerous habitats,...

While on the last leg of their race, Russell and his friends must choose between a rescue mission and an attempt to win the race.

"When the teams take on the African savanna, the competition heats up, and Mari starts to feel the pressure. She's never been the strongest or the fastest racer. Sure, she knows almost everything about lions and rhinos and zebras. But facts can only get the team so far. She better keep up, or she might let her friends down. Because the finish line is in sight, and Team Red wants to win!" --