A marine biologist’s guide to tide pool etiquette. | Oregon Zoo

You Will Not Believe Sea Urchins Have Teeth. five of them, actually, arranged in a freaky jaw called Aristotle’s lantern. These slow-moving spike balls scrape algae off rocks nonstop, shaping entire coastlines over time. Step wrong and you’ll learn fast those spines aren’t just for looks , they can snap off in skin and take weeks to dissolve. Quiet, ancient, and surprisingly powerful, urchins are doing serious work beneath the waves while most people walk right past them. #Oregon #animals #natur