"Over the years, I’ve seen changes. I’ve been a witness to perhaps the greatest era of discovery about the ocean. But at the same time, the greatest era of loss. Since the middle of the 20th century, humans have succeeded in extracting from the ocean, immense quantities of wildlife. The estimate is by the middle of the 21st century, if we keep taking wild fish at the level that we are today, there’ll be no commercial fishing, because there won’t be enough fish to catch."