They’re not related to legumes, but some of these animals release toxic saponins to complement their lackluster immune system. After birth, these animals develop well-defined limbs between the bipinnaria and brachiolaria developmental stages. Millions of these animals involuntarily shed their limbs and disintegrated (-5[1])due to a mysterious wasting disease. Mussel populations (-5[1])on North America’s Pacific coast are controlled by a purple (-5[1])type of these animals (10[1]-5[1])in genus (10[1])Pisaster. (10[1])The giant triton snail is ecologically important because it acts as the primary predator of a coral-eating (10[1])species of these animals named for the crown-of-thorns. (10[1])These animals are found in class Asteroidea, (10[1])unlike their closely related “brittle” sister class. For 10 points, identify these (10[1])echinoderms named for their five arms. (10[1])■END■ (10[2])