00:00Sous-titrage Société Radio-Canada
00:30Sous-titrage Société Radio-Canada
01:05Some of the Pacific's landmarks are not so difficult for us to see.
01:14They reach out to us, but are just as hard to understand.
01:18Sous-titrage Société Radio-Canada
01:44In 1995, divers discovered delicate circular patterns furrowed into the seabed of Japan's Amami-Oshima.
01:58They were ephemeral.
02:02The current would sweep them away, and they would reappear elsewhere.
02:09The Pacific teased amateurs and scientists alike with these cryptic designs.
02:16Until 2011, the mystery remained, beckoning us to solve it.
02:25Who, or what, was constructing these?
02:34Scientists had to watch the sea bottom for almost a year before they caught the secretive artist.
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