Trawl doors for professional fishing by Danish Thyborøn Trawldoor
Fishing Gear: Midwater Trawls
Patagonian Semi-Pelagic TrawlNET Systems
IB 06-34: NMFS Closes Directing Fishing for Groundfish with Non Pelagic Trawl Gear in the Red King Crab Savings Subarea of the Bering Sea and Aleutian Islands
Midwater Trawls
Another successful tank trip - Cosmos Trawl
Trawl Fishing: Wanton Waste on the High Seas - Fish Alaska Magazine
Fishing Gear Types 101: Trawling — Monterey Bay Fisheries Trust
Figure 2 from The effect of semi-pelagic trawling on american plaice (hippoglossoides platessoides) by-catch reduction in the northeast arctic shrimp fishery