Ill try to get a better pic tomorrow. Isnt there supposed to be white lines around the skirt when they are closed up? If you look in the first pic you wont see any lines.
Yes, when the polyp is closed you will see watermelon like stripes on the outside skin. Similar to what you see in the top right corner of this pic (this is just a PE and not a PPE)
I would hold off before saying those in your pics aren't PPE. They are most def a PE type I just can't tell the exact name without them having some time to adjust. I vote that you give it another 2-3 weeks for saying yes or no.