spiny sun star Directory References Discover 6 Wars of Independence 9 Mind-Altering Plants Titanosaurs: 8 of the World's Biggest Dinosaurs What is Holy Week? Causes of the Great Depression 9 of the World’s Deadliest Snakes Where Is “Old Zealand”? Contents spiny sun star sea star Ask the Chatbot a Question Ask the Chatbot a Question Also known as: Crossaster papposus Learn about this topic in these articles:description In sea star…cm across; the very common spiny sun star (Crossaster papposus) has as many as 15 arms. Cushion stars, of the circumboreal genus Pteraster, are plump five-rayed forms with raised tufts of spines and webbed, short, blunt arms.Read More