Blue whale, Nautilus, tropical fish...these wonderful creatures all come from the oceans that occupy 71% of this blue planet. Data has shown that there may be about 1 million species of marine life, of which 250,000 are known to humans, which means that there are still many unknowns in the mysterious ocean. The COP15, hosted by China, is being held in Montreal, Canada. Let's dive into the ocean and take a look at the biodiversity there in the video.
(Cover image designed by CGTN's Yu Peng, video edited by CGTN's Xu Chenlu)
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