Explorers William Beebe and Auguste Piccard compare notes

Professor Picard and Doctor William Beebe discuss their record-breaking explorations. Picard reached over 10 miles high, while Beebe descended half a mile into the ocean. They compare the pressures experienced at these extremes, highlighting the challenges of atmospheric and oceanic exploration.

What was the atmospheric pressure mentioned in the conversation?

What external pressure was noted when discussing the Bathysphere?