Linked from
The 7 pages that link to Trawl fishing, each with the reason it gives.
BycatchBroader topic: Trawl nets can capture many species and sizes in a single tow.
Fish and chipsRelated: Industrial trawling increased the supply of affordable white fish.
FlatfishRelated: Bottom trawls catch flatfish, but can also disturb seabed habitats.
HakeRelated: Trawling is a common method for catching bottom-dwelling hake.
John DoryRelated: Bottom trawls can catch John Dory where it occupies continental-shelf waters.
Whiptail stingrayRelated: Bottom trawls can capture rays and disturb the habitats they use.