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A fishing technique whereby a pit net upon seine ropes is pulled out by two boats through the water column. 

Fishing gear fixed in the water column. 

In the water column.

A method whereby two ships pull out a trawl through the water column.  

Pelagic trawls is a fishing technique whereby a funnel-shaped trawl is pulled through the water column. Because the trawl does not drag over the bottom, there is no bottom disturbance.

A cultivation technique whereby fish is cultivated in ponds. This happens extensively (without additional feed) and intensive (with additional feed supplements). 

A fishing method where pots and traps are provided with bait (fresh or salted fish) and placed on the seabed. Species caught in this way include crab, lobster, wulk, langoustine and octopus. 

Clay pots are used in southern Europe to catch octopus. The animals crawl into the pots to use it as shelter, after which the fisherman collects the pots. This is a selective fishing method that does not damage the soil.

A stable fishing mortality, necessary to keep a fish stock healthy. 

An experimental beam trawl method whereby the tickler chains are replaced by wires that emit light pulses. 

An active fishing method aimed at catching Pelagic species (species swimming in the water column). Purse nets are set in a circle around a school of fish, after which the net is closed at the downside. 

A ring net in which the net is circulated around a school of fish. Then the net is closed and taken in. This is also called 'purse seine'.