Stereocidaris granularis var. rubra Mortensen 1927

Family: Cidaridae

Order: Cidaroida

Locality: Philippines, Siquijor Island,

Dimensions: 63 mm x 48 mm

The specimen shows an irregularity as one primary tubercle is missing and the areole is covered by smaller tubercles.

Locality: Philippines, Olango Island, deep water

Dimensions: 75 mm x 60 mm

The sea urchin has an unusual apical system (self-repairing?)