Man's remotest ancestors came out or the sea; shall we ever take to living on the sea-bed again? Modern exploration of the under-sea world-which accounts for seven-tenths of the earth's surface-shows this could be possible.
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Man's remotest ancestors came out or the sea; shall we ever take to living on the sea-bed again? Modern exploration of the under-sea world-which accounts for seven-tenths of the earth's surface-shows this could be possible.