Went for a walk last night on the beach,dogs had a good run around,.at one point the pure started chasing a low flying gull way out into the sands which is usually covered by water,in full flight he hit a soft spot and sank right in...Black sludge it was ,a pocket of it ,took the wind out of his sails pretty dam quick...when he returned the smell is undescribable,and I'm guessing putrid rotten seaweed and other stuff,I first thought it was crude oil on him ,what a dose trying to clean him up before we got back to the car....and the smell lingered on