
1) A sea
Found on
https://www.crosswordclues.com/clue/trawling

1) Fishing with a net 2) Working with a dragnet
Found on
https://www.crosswordclues.com/clue/trawling

is fishing with a large bag-like net, called a trawl, which is drawn along behind a boat called a trawler. The net can be dragged along the sea bottom in order to target demersal fish, or pulled through clear water in order to target pelagic fish. Trawling along the sea bottom can result in significant bycatch and habitat destruction.
Found on
http://en.wikipedia.org/wiki/Glossary_of_fishery_terms

Trawling is a method of fishing that involves pulling a fishing net through the water behind one or more boats. The net that is used for trawling is called a trawl. The boats that are used for trawling are called trawlers or draggers. Trawlers vary in size; from small open boats with only 30 hp engines to large factory trawlers with over 10,000 hp...
Found on
http://en.wikipedia.org/wiki/Trawling

(from the article `conservation`) Whereas damage to coral reefs is important for the loss of species, the greatest physical damage to ocean ecosystems involves the effects of bottom ...
Found on
http://www.britannica.com/eb/a-z/t/75

Fishing by towing a trawl net.
Found on
http://www.pbs.org/emptyoceans/glossary.html

Trawling is the process of dragging the sea-bottom for fish by a flat conical shaped net known as a trawl.
Found on
http://www.probertencyclopaedia.com/browse/RT.HTM

is fishing with a large bag-like net, called a trawl, which is drawn along behind a boat called a trawler. The net can be dragged along the sea bottom in order to target demersal fish, or pulled through clear water in order to target pelagic fish. Trawling along the sea bottom can result in significant bycatch and habitat destruction.
Found on
http://www.translationdirectory.com/glossaries/glossary245.php

This term refers to a controversial method used by the police to investigate allegations of abuse, usually in children's homes. Senior officers have described trawling operations as the reverse of normal police methods. Instead of starting from a crime and setting out to find the criminal, the trawling procedure starts with the suspect (or an alleg...
Found on
https://www.encyclo.co.uk/local/20141
No exact match found.