Polymastia pepo
 Polymastia pepo is a species of demosponge belonging to the family Polymastiidae. It is a common species of rocky subtidal and intertidal habitats in the far north of North Island New Zealand.This is a large often spherical sponge up to 40 cm in diameter. It is firm and bright orange and rather resembles a pumpkin (hence the specific name: pepo is Latin for pumpkin).