Answer:
Bottom trawling
Explanation:
There are different zones in the ocean The pelagic zone is the top and benthic is the bottom most zone. In each zone has different ecosystem.
For a fisherman who wants to catch fish that is found in the Benthic region. He will need to use fishing methods that has nets that will reach the sea floor.
Bottom trawling will be the most appropriate method because it used large nets that have heavy weight that is able to drag across the seafloor collecting everything on its path.
