Ice melt in the Arctic Ocean is opening up previously untouched areas to industrial fishing fleets using ecologically risky bottom trawling methods, writes Joe Sandler Clarke. Ecosystems supporting walruses, polar bears, puffins and other sea birds could be stripped bare.Bottom trawling is widely considered to be the among most destructive fishing techniques, with vast nets catching fish as they are dragged along the sea bed.Using official data and ship tracking systems, researchers found that large numbers of fishing vessels owned by major companies have taken advantage of melting sea ice to fish in previously impossible to reach parts of the Norwegian and Russian Arctic.