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Unit1OurlivingplanetTheoceandeep海洋深处Welookupwardsandwonderwhatliesbeyondourplanet.Wesendprobesintothevastnessofspacetoexploretheunknown.Webuildspacestationstoadvanceourunderstandingoftheuniverse.Ourcuriosityaboutouterspacehasremainedunshakeable.Meanwhile,itisestimatedthatmorethaneightypercentoftheworld'soceansareunexplored.So,ifwewanttofindexcitingnewlifeformsaswellasundiscoveredandunusualgeologicalformations,theoceaniswhereweshouldalsobelookingThenwhydon'twedivetothebottomofareallydeepoceanandtakealong,closelookbeneaththewaves?我们仰望天空,好奇在我们的星球之外有什么。我们向浩瀚的太空发射空间探测以探索未知世界。我们建造空间站以增进对宇宙的了解。我们对太空的好奇心一直以来从未动摇。同时,据估算,世界上超过80%的海洋还未被探索。因此,如果我们想找到令人激动的新生物以及未被发现的、不同寻常的地质构造,海洋也是我们应该去寻找的地方。那么,我们为什么不潜到很深的海底,长时间地、仔细地观察海底呢?Thefirst200metresofourdivetakesusthroughwhatcanbecalledtheopenocean,wher