by Ian Marriner on April 13, 2024
Hithought you may find these interesting, enjoy, Ian
https://www.divephotoguide.com/underwater-photography-techniques/article/underwater-photographer-s-guide-snell-s-window-martin-edge/
https://www.divephotoguide.com/underwater-photography-techniques/article/underwater-photographer-s-guide-snell-s-window/