That truly is some Beautiful work,Indeed!As for bacteria,If anything,It would be the Good Bacteria,but of course,lol!Short of Dis-colored,I've yet to see Paracord's Integrity,Compromised by U.V's but,I'm sure if Salt water were added to that,I'm sure something would come of it!In lieu of whale/walrus parts,I would call that the Scrimshaw of Today!I would Happily purchase some of that Knowledge, if it were available!