Talk:Twisty Bridges/@comment-70.190.85.113-20151227031205/@comment-67.171.147.250-20160119071416

its like a prtective mask the barnacles will close. it opens when it feels a current thinking plankton or other prey will flow inside it. ive put a rock with tiny barnacles in it in a bag and shook it around. all the barnacles opened up and satred snapping trying to get food.