Refers to fishing using nets, as opposed to other methods like angling or spearfishing. Often used in contrast with 釣り (angling).
See also: 網漁業
Net fishing is thriving in this region.
Which do you prefer, net fishing or angling?
gill-net fishing; tangle-net fishing
seine fishing; dragnet fishing
Compound of 網 (net) and 漁 (fishing).