The Tiny Crab That Leaves A Beach Full Of Beads
A Pattern Can Reveal An Animal’s Meal: Across damp beach sand, tiny rounded pellets form trails around a small hole. The arrangement may resemble scattered beads or an unfinished flower. Its maker can be much harder to spot than its work. Sand-bubbler crabs leave these pellets while feeding. Singapore’s National Parks Board describes their distinctive sand-ball patterns in its shore guide. The marks offer a way to notice wildlife on ground that might otherwise seem empty.