sea urchin

about across algae animals archaically black blue brown called class close colors common constitute cuisines deep3 delicacy dollars dull echinoderm echinoidea echinoids eels fathoms feed feeding from globular green hedgehog hedgehogs12 hunt include inhabit intertidal many metres move name oceans olive other otters phylum predators primarily purple resemble round sand shades shell slowly small species spiny starfish such test that their triggerfish typically urchin urchins which with wolf word