Echinoderms: Urchin Time-lapse Eating Kelp


Sea urchins use their sensory tube feet to catch drifting kelp and carry it to its mouth on the underside. Its five-part jaw efficiently cuts off pieces to eat.

Next Generation Science Standards for this Video

Sea Urchin tube feet easily catch drifting kelp and their jaws are specialized for efficiently cutting off pieces to eat.

Sea urchin feeding strategy: natural selection has produced urchins with powerful jaws so they can eat large quantities of kelp. Their impact on kelp forests can be great if the population is high.