This is pure bleach. To the left is one of my three mac n cheese (juvenile horse conchs) that I pried the barnacles off, only to find it spotted with periostracum, so it needs to sit a little longer. To the right, one of the most perfect lightening whelks I’ve ever found, but it’s a “stinker”. There must be some of the remains of the animal stuck deep inside. The mac n cheese might be ready to come out by tonight, but the stinker will stay until it doesn’t stink any more (probably a week or so).