2. What Lurks Below

The best sand sculpting teams in the world must battle the tide and each other, to build underwater inspired creations.

3. Sky High

The eight remaining teams are forced to go sky high in an architecture challenge. But sometimes, the bigger they are, the harder they fall.

4. Big Little Things

The seven remaining teams are put under the microscope, as they create teeny tiny items on a massive, macro scale.

5. Fossil Mania

The teams must bring to life a fossil from a creature who lived long ago. The challenge may be prehistoric, but the rivalries on the beach are alive and well.

6. Things That Go Bump in the Night

Only five teams remain, and they’re going to have to get in touch with their dark side when they create a spooky, scary sculpture to be revealed at night.

7. Memory Lane

The sculptors are asked to dig deep, as they bring to life a personal memento using emotional carving. But Mother Nature has her own story to tell.

8. Heroes & Villains

The top four teams are going to have to do double duty in an epic superhero supervillain face-off challenge.

9. Optical Illusion

The top three teams must pull off a spectacular mind-bending optical illusion if they want to make it to next week’s final.

10. The Artists' Choice

In the season finale of Race Against the Tide, the top two teams go head-to-head in an all-out beach battle, for all the glory and the grand prize of $10,000.