Sustainable seabed trawling has been a topic of much debate in recent years, with some arguing that it is possible to fish in a way that does not harm the marine environment, while others maintain that all forms of bottom trawling are inherently destructive. The evidence on this issue is complex and often contradictory, but there are some key points that can be drawn from the research that has been conducted.

Bottom trawling can cause extensive damage to marine habitats

Bottom trawling involves dragging a heavy net along the seafloor, which can damage benthic habitats and the organisms that live in them. Studies have shown that bottom trawling can destroy coral reefs, seagrass beds, and other important ecosystems. It can also kill or injure fish, marine mammals, and sea turtles.

The impacts of bottom trawling can be long-lasting

The damage caused by bottom trawling can take years or even decades to recover. For example, one study found that it took 15 years for a coral reef to recover from damage caused by bottom trawling.

There are some examples of sustainable bottom trawling practices

While bottom trawling can be destructive, there are some examples of sustainable bottom trawling practices that have been developed. These practices include using lighter nets, avoiding sensitive areas, and limiting the amount of time that nets are spent on the seafloor. Using “pulse trawling”, using larger mesh sizes to prevent juveniles from being caught unintentionally, and deploying bycatch mitigation measures are other tools utilized for this purpose.

Is sustainable seabed trawling possible?

The evidence suggests that sustainable seabed trawling is possible, but it requires careful management and the use of mitigation measures to minimize the environmental impacts. However, some argue that even sustainable bottom trawling can still have negative impacts on the marine environment and that other fishing methods should be used whenever possible.