Sea urchins have five teeth, each held by a separate jaw in a circular arrangement at the center of their spiked, spherical bodies. Now, researchers have discovered how the teeth of the pink sea urchin are specially equipped to sharpen themselves.
Sea urchins have five teeth, each held by a separate jaw in a circular arrangement at the center of their spiked, spherical bodies. Now, researchers have discovered how the teeth of the pink sea urchin are specially equipped to sharpen themselves.