The consequences of dynamite fishing are more dire than you might think. Watch and learn. | National Geographic

Blast fishing or dynamite fishing is the practice of using explosives to stun or kill schools of fish for easy collection. This often illegal practice can be extremely destructive to the surrounding ecosystem, as the explosion often destroys the underlying habitat (such as coral reefs) that supports the fish. Despite the effectiveness in killing or stunning the fish another problem with blast fishing is the inefficiency of retrieval. For every ten fish killed only one or two float to the surface