On a routine expedition in 1987, oceanographers in the submersible Alvin were mapping the typically barren, nutrient-poor seafloor in the Santa Catalina Basin, off the shore of southern California.

在1987年的一次例行探险中，一群海洋学家在南加州海岸外，通过潜水器阿尔文潜入海底，为圣卡塔利娜盆地描绘那典型的贫瘠、荒芜的海底地貌。

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The purpose of the current Okeanos Explorer expedition is to help reduce that large unknown, by mapping and imaging features and creatures that may never have been seen before.

WHITEHOUSE: Watch Live: Be a Virtual Ocean Explorer