What helps move food toward the mouth of a sea urchin?

Sea urchins use their specialized feeding structure called Aristotle's lantern, which consists of a complex arrangement of muscles and calcareous plates. This structure features five tooth-like projections that help scrape algae and other food from surfaces. Cilia on the sea urchin's body also assist in moving food particles toward the mouth, facilitating the feeding process. Together, these adaptations enable sea urchins to efficiently gather and consume their food.