Which of the following best explains the environmental problems associated with trawling?

a. Trawling always destroys sea floor ecologies.

b. Trawling gathers fish indiscriminately.

c. Trawling is too selective at gathering fish.

d. All of the above

The right answer here is a) Trawling always destroys sea floor ecologies. Trawling is damaging for a variety of reasons, but a particularly notable impact is on the sea floors which the heavy nets are dragged across. Research has proved that coral reefs and delicate ecologies are being seriously impacted by deep sea trawling.