The ocean depths are explored with the aid of a submarine chamber of Williamson's invention and a few hardy souls. The construction of the device is examined; but most of the footage is given to plant and animal life, a girl swimming among the coral growths, and two divers who encounter a moray and an octopus.
There are no TV Airings of Wonders of the Sea in the next 14 days.
Add Wonders of the Sea to your Watchlist to find out when it's coming back.
Check if it is available to stream online via "Where to Watch".