因为水底拖网是捕捞某些深海鱼种的“低成本”办法，因此某些复杂而又独特的生态、最为主要的是被称为海底山的地下火山被切断。
Complex and unique ecologies, most notably underground volcanoes known as seamounts, are ripped to shreds, because bottom trawling is the “low cost” way to catch a few deep sea fish species.