This practice helps collectors catch live tropical fish, but it destroys coral reef habitat. It is estimated that 330,000 pounds of cyanide is used on just the Philippine coral reefs alone. And as one coral reef is destroyed, fishers move on to another, where the process is repeated. Other countries experiencing this crisis are Indonesia, Papua New Guinea, Palau, Tuvalu, and the Federated States of Micronesia. Trawling, or I should say, the use of trawl nets, is also a destructive fishing method currently used.
Fishers pull a heavily weighted net to drag the bottom of the ocean.
Because this net is made with openings small enough to catch just about any kind of fish, it does not differentiate between desirable or undesirable fish, large quantities of discards are produced. For example, a trawling net designed to catch ground fish can catch many other ocean creatures, including shrimp, crabs, and even seals. Here are some links to links about my topic. Companies specializing in providing solutions to environmental risks.