Stars of the Tides Wild Kratts : Season 4 Episode 2

When the Kratt brothers argue over which of them gets to keep a beautiful seashell, Aviva organizes a contest to settle the matter. Chris and Martin will need to survive and race to the finish line in one of the harshest habitats on Earth: the intertidal zone. To do so, they must use the Creature Powers of animals that live in this constantly changing environment.