Wholesale pink sea urchins are pretty shells.  These urchins will have a green, pink and cream color to them - review photos.  They measure 1-1/4 inches to 1-3/4 inches in size. If you like making seashell christmas ornaments, mirrors or wreaths, these colorful pink sea urchin seashells add an attractive touch to your craft project. Sea urchin spines are very sharp and act as a deterent to predators.