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Searching for sunken treasure with an underwater drone; the paddleboard pumped up with a hydro jet; the ping pong robot sharpening one's backhand; when mail order shopping began.
- Documentary, Family, Kids, News
- English
Searching for sunken treasure with an underwater drone; the paddleboard pumped up with a hydro jet; the ping pong robot sharpening one's backhand; when mail order shopping began.