Welcome to the world of Phylum Echinodermata! Directly translating to - Spine Skin. I’m sure you can see why! Echinoderms have a few key features that put them into this category, including the water vascular system that is responsible for locomotion, food and waste storage and transport, and respiration. They also must satisfy the requirements of pentamerous radial symmetry, meaning - divided into 5 roughly equal sections. This is hard to see in the sea urchin, but will become clearer in a later photo :) Although there is plenty to discuss about these guys, I mainly wanted to mention my favourite feature! Known to inhabit intertidal and deep oceans, these Echinoderm spiky bois will eat just about anything they can get their weird little teeth around. Algae, kelp, periwinkles, barnacles, the list goes on. To accomplish this, they have a spectacular feeding adaptation known as Aristotle’s Lantern. In the next few pictures you’ll see why we call it that!