Similar to bottom trawling, midwater trawling involves towing a large net through the water column. Trawls are designed to capture and trap the target species inside the codend as the net is hauled through the water. Midwater trawl.
squid – NOAA Teacher at Sea Blog
The Myth of Mid-Water in the Alaska Pollock Fishery - Marine Fish Conservation Network
A bottom trawl used for fishing in a trawler or dragger boat laid out on a wharf Stock Photo - Alamy
China Pelagic Trawls Manufacturers & Suppliers & Factory - Customized Pelagic Trawls Wholesale - QinHo
transect – NOAA Teacher at Sea Blog
Commercial fishing - Comet Trawl
NOAA Ship Bell M. Shimada – NOAA Teacher at Sea Blog
Fishing Gear Types 101: Trawling — Monterey Bay Fisheries Trust
The five trawl types defined: Demersal/bottom 2-panel trawls (OTB2)
Rockfish – NOAA Teacher at Sea Blog
Design and operation methods of a mid-water trawl for quantitative sampling of a surface pelagic fish, Pacific saury (Cololabis saira) - ScienceDirect