The picture unveils a drastic change of ocean ecology during the past century due to the expanding scale of world commercial fishing.

该图显示出20世纪以来由于全球商业捕鱼业的大规模扩张而导致海洋生态系统的巨大变化。

youdao

"We must stop the shark-finning which is resulting in the death of thirty to seventy million sharks each year because that has so upset ocean ecology by the removal of these often apex, top-level predators."

VOA: special.2011.03.15

The problem: getting the projects financed, past regulators and past people eager to preserve pristine ocean views and worried about marine ecology.

FORBES: Magazine Article