Red urchin
A species of Astropyga, Also known as False fire urchin, Star urchin, Radiant sea urchin Scientific name : Astropyga radiata Genus : Astropyga
Red urchin, A species of Astropyga
Also known as:
False fire urchin, Star urchin, Radiant sea urchin
Botanical name: Astropyga radiata
Genus: Astropyga
Content
Description
Photo By Bernard DUPONT , used under CC-BY-SA-2.0 /Cropped and compressed from original 
Description
Astropyga radiata is a large urchin with a test diameter of up to 20 cm (8 in), flattened or slightly concave on the aboral (upper) side. The spines are up to 4 cm (1.6 in) long and are grouped in five vertical clusters in between which are V-shaped areas with no spines corresponding to the interambulacral plates. These bare areas are red with lines of iridescent blue dots while the colour of the rest of the test and spines varies from reddish brown to purple, dark brown or nearly black. The spines are long and hollow; they are of two kinds, the shorter being venomous. The anal sac is prominent, brown with a dark tip. Juveniles have spines with transverse banding and this characteristic sometimes persists into adulthood.
* Disclaimer: The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.
Scientific Classification
Phylum
Echinoderms Class
Sea urchins Order
Diadematoida Family
Diadematidae Genus
Astropyga Species
Red urchin 
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