2008年12月的一次严重洪灾再次让人们注意到威尼斯脆弱的状态和即将成为水下城市的命运。
A severe flood in December 2008 brought renewed attention to Venice's vulnerable state and imminent fate as an underwater city.
EarthSky也采访了伍兹·霍尔海洋研究所的海洋学家布瑞克·欧文斯，他所在的团队安装了安装一个水下机器人，直接测量原油泄露处及其周围洋流的状态。
EarthSky also spoke with oceanographer Breck Owens at Woods Hole Oceanographic Institution, whose team has released an underwater robot to directly measure currents in and around the oil spill.
在蝌蚪状态以及变态成幼年角蛙之后，它们都能够在水下发出叫声。
They continue to emit distress calls underwater both as tadpoles and after they have begun metamorphosis (when they become froglets).
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