Pollution Science 101 - China ( Ecological Collapse
2016-5-13 · Average fish density, which is 4,000kg a hectare in a healthy reef, is less than 1,000, he said. Coral reefs sustain a quarter of marine species, despite covering a tiny portion of ocean territory. Shrimp, crab, lobster and many other commercially viable species of fish live on reefs. If reefs disappear, so, eventually, will fisheries.