Blast fishing is another form of harmful harvesting of fish. Defined, blast fishing is he practice of using explosives to stun or kill schools of fish for easy collection. Unlike over-fishing, blast fishing is mostly illegal because it can be very immediately harmful to the surrounding ecosystem. Not only does blast fishing kill the fish but it also damages and destroys their habitat. For instance, the coral reef plant is one of the most largely affected ecosystems in blast fishing and it is home to hundreds of thousands of organisms.
Though outlawed, blast fishing remains widespread in Southeast Asia, as well as in the Aegean Sea, and coastal Africa. It is most famous in the Philippines where in 1991 twelves percent of the fisherman engaged in this harmful activity. The fisherman would use either commercial dynamite or homemade bombs made of a glass bottle and various explosive powders.