Aldo assists the team in rigging a frame to lower Steve into a cave.
Steve joins Archaeologist Guillermo de Anda as they venture into a cave.
Steve observes a tarantula hawk wasp as it attacks a Mexican red-rump tarantula.
Expert diver Robbie Schmittner prepares a guide line for an exploration of a cave.
Robbie reminds Steve of an important rule of cave diving, advising him to stay calm.
Steve dives with cave expert Bernadette Carrion as they explore the Yucatan Peninsula.