Sea urchin coloring pages - a page filled with black and white images of bottom marine animals. These creatures have a ball-shaped body, covered entirely with a shell made up of small and very strong plates. Needles are movably attached to the shell on all sides. Depending on the species of sea urchin, the size of the needles can reach from a few millimeters to thirty centimeters. Needles are necessary for animals to move, to get food, to protect themselves from danger. Some urchins make burrows in the rocks, others burrow in the sand at the bottom or cover themselves with shell fragments and algae. By coloring sea urchins, children can learn more about their structure and appearance. We have collected the best Sea Urchin coloring pages that you can print for free for your kids.