Weapons of Mass Destruction
A gillnet is a wall of netting that hangs in the water column and entangles anything that tries to swim through it. Becuase of this reduced selectivity the amount of bycatch is high.
Longlines consist of a miles and miles of fishing line with baited hooks every couple feet apart. Because of this reduced selectivity the amount of bycatch is high.
The Bottom Trawl
Bottom trawling is a fishing practice that herds and captures the target species by towing a net along the ocean floor. The most damaging and least selective technique yet. This not only destroyes the sea floor but also picks up everything in it's path creating a tremendous amount of bycatch.