The photo in this scene is from Chang Nam-won, the 1st generation underwater photographer of South Korea.
More of his photos: https://m.cafe.daum.net/subdued20club/ReHf/3944898

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    A bit more about Chang Nam-won (with help of Google Translate) …

    He started his underwater photography since 1979, the first one who use wide-angle lens to shoot whales. At the same time, he was a news photographer for JoongAng Ilbo, went to places like Somalia, Rwanda and Iraq, also reported one of the earliest meetings of two Koreas leaders in Pyongyang.

    The photo, according to the following report, probably shot in the 1980’s in Tonga.
    https://www.cnbnews.com/news/article.html?no=507088

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