(continuing) I'm supposed it, 3,000~4,000years ago, could have 1) a better temperature and weather change for ocean, different vision from recent 100years. 2) People sailing on the sea knowing mutual and satellite setting between simple boat, wind, sea-level and marine creatures. 3)There's no plastic, industrial waste, heavy metal or vessel to ruin....Anyway, all people could imagine it's quite FAR.
假的1)度候化和近百多年不同2)航行的人船具和海平面+海洋生物+大型哺乳海洋物的航共生相和(很神ㄟ)3)有塑置物塑微粒和各重金大型船的威....小的~
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