Urchip

The urchip split from uksip terricola. It has specialized to eat crystal shrubite. Its tooth has developed an acidic chemical that can dissolve the crystal shrubite more easily. After digestion, it poops out sand, thus adding much needed nutrients back into the reef, much like Earth's parrot-fish. It can swim a little, but its back fin has evolved into 3 prongs and its scales have developed into spikes. This protects it from beakworms and other such marine predators. Its 4 tentacles each have a claw, which it uses to hold onto the crystal shrubite. It still has privative use, but mainly uses them to look where to crawl on the reef. Unlike its ancestor, it is fully aquatic and rarely goes on land unless it's low tide, during which it looks for a place to hide until high tide.