The Aquateam learns to free dive from a world champion. But after relying on their SCUBA gear for so long, diving without an air supply has one team member freaking out!

The Aquateam ride a tourist submarine to a depth of 132 feet, then visit sea turtle nesting sites. Feeding time at the Curacao Sea Aquarium gets a little intense when team members experience a swarm of hungry stingrays.

Discover how William Beebe extended the boundaries of deep-sea exploration in the 1930s by submerging himself in an oversized giant steel ball with its designer. Between 1930 and 1934, Beebe undertook a series of increasingly daring dives, pushing the boundaries of technological possibility. In a remarkable device designed by Otis Barton - a young, eccentric New England engineer - the two men probed deeper and deeper into the ocean's darkest secrets....