Following the explosion and fire on the rig, the blow-out preventer on the sea bed should have automatically sealed the well, but it failed, resulting in the massive oil spill.
Based on a scaled-up version of the conventional wind turbines now common in the British landscape, these giants would be fixed to the sea bed but would stand nearly 600ft high above the waves.
Indeed, much more oil seeps from the sea bed around the world naturally than from spills and shipping, says Simon Boxall from the University of Southampton.
Most are microbes of bacteria, though there are also worms burrowing into the sea bed and ocean insects less than 1mm long.
它们中的大部分属于细菌,但有也有一些是在海床中挖掘的蠕虫,或是体长小于1mm的海洋昆虫。
Many types of clam escape predators by burrowing into the sea bed using alternating movements of their shell and of the soft, muscular foot contained within that shell.
许多蛤类利用双壳及内部柔软强健足部的交替运动在河床上掘洞来逃避天敌。
Russia has already planted a flag on the sea bed at the North pole while Canada has increased funding for cold weather training centres and new patrol vessels
俄罗斯已经在北极海床插下标记,加拿大在严酷天气培训中心以及和新的巡逻舰上增加了资金投入。
The sea bed was scoured with powerful nets and there was tremendous excitement on board went a chest was raised from the bottom.
当一只箱子从海底被打捞上来时,甲板上人们激动不已。
One project already has lines of acoustic sensors on the sea bed from Alaska to California.