Here is what Jenny Lord says about it:
Deep Diving - Jenny Lord
The Attraction to the Deep Blue
For thousands of years man has looked at the sea and wondered what was below the waves. With the invention of the aqua-lung, people started to explore the undersea world and like any new place many wanted to expand beyond what was known, pushing the limits of the human body to discover more.
The concept of deep diving was born. The improvement of the equipment and our knowledge has allowed people to dive deeper, but still many look down and wonder what there is even further below us.
This is what Alvin is for.
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