Don’t get me wrong I enjoy studying all inverts, and the regenerative powers of echinoderms is rather intriguing, especially how they drop a limb without loosing internal fluids when their ceolomic spaces are so large, and it happens so fast… but….

bioluminescence in octopods (a symbiotic bacterium), complex sexual behaviors, mutualism on large and small clam species, eyes of octopods (largest eye to body size) and scallops, radula adaptation to rasping and piercing, a beak that has a gradient of material hardness, brooding in deep water squids, camouflage, seriously I could keep going. So many cool things we have learned and so much more to learn about… compared to echinoderms… there really is no comparison.