Vlasta Varna美劇美國2013查看劇情A crew of mariners, scientists and filmmakers are followed as they cast off on the Sedna IV, an oceanographic schooner, to sail around the world exploring the beauty of nature, how ecosystems work and conservation challenges facing the planet.
1 The Sharks of Cocos Island
Highlighting efforts to save the sharks of Cocos from overfishing
2 The Song of the Humpback
Scientists attempt to decipher the secrets behind the songs of humpback whales.
3 Sloths
A biologist at a research center on Barro Colorado Island ...
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