During 2018 I have noticed an increasing interest from the fashion industry concerning ecological and sustainable tanning, and specifically that of fish skin. During this year I taught a course on Island for design students from Icelandic, Danish, Swedish, Finish, Italian and UK universities, as part of their higher education curriculums of sustainable fashion. They learned about the materials by starting with raw skins and transforming them to a usable products using bark from sallow and rapeseed oil. During the course we discussed the sustainability aspects of using fish waste from non-endangered species and ingredients that do not produce any toxic waste, and about unethical aspects of using skins from exotic endangered species. I have gathered my knowledge in the two books. "Traditional tanning; Leather and Fur skin” and "Fish leather tanning and sewing" and I have produced a traveling exhibition “Arctic Leather Tanning - A Cultural Heritage for Humanity.