Thorns of the Sea – Sea Urchins @ Sodwana Bay

By Sodwana Bay

Sodwana Bay Sea Urchins Sea urchins (/ˈɜːrtʃɪnz/), are typically spiny, globular animals, echinoderms in the class Echinoidea. About 950 species live on the seabed, inhabiting all oceans and depth zones from the intertidal to 5,000 metres (16,000 ft; 2,700 fathoms).[1] Their tests (hard shells) are round and spiny, typically from 3 to 10 cm (1 to 4 in) across. Sea urchins move slowly, crawling with their tube feet,…