Trawling
Towing a large cone-shaped net behind a boat, either along the sea floor or through open water.
Also: trawl, bottom trawling, midwater trawling
A trawl is a funnel of net held open by boards or a beam and towed behind one or two boats. Bottom trawls run along the sea floor for shrimp, flatfish, cod and croakers; midwater trawls catch schooling fish such as herring and pollock. Trawling lands a large share of the world's catch and is the main mechanised fishery along India's coasts. Bottom trawling can damage sea-floor habitats such as sponges and corals and catch many young fish, which is why it is limited in many protected areas and inshore waters.