Children (10 direct children, 13 direct and indirect children):
Collector urchin
(tree size 2)
Tripneustes gratilla
Tripneustes ventricosus
(tree size 1)
White sea urchin
Tripneustes depressus
Tripneustes esculentus
Tripneustes parkinsoni
Tripneustes kermadecensis
Tripneustes antiqua
Tripneustes magnificus
Tripneustes pregratilla
Tripneustes tobleri