The diving bell ship allows workers to walk on the sea floor https://video.nostr.build/8d21bce372d2aebb867445a98ac50cf7f9f6824629d53491cd333208df4d4271.mp4
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https://video.nostr.build/8d21bce372d2aebb867445a98ac50cf7f9f6824629d53491cd333208df4d4271.mp4 The sea walk bell allows on floor workers the ship diving to