Reef urchin
A species of Echinometra Scientific name : Echinometra viridis Genus : Echinometra
Reef urchin, A species of Echinometra
Botanical name: Echinometra viridis
Genus: Echinometra
Content
Description
Photo By François Michonneau , used under CC-BY-3.0 /Cropped and compressed from original 
Description
The reef urchin has an elliptical reddish brown test (shell) covered with medium length spines. These are greenish in colour with paler bases and darker, often violet, tips. This urchin grows to a diameter of 5 centimetres (2.0 in) with the longest spines being 3 centimetres (1.2 in). It looks very similar to the rock-boring urchin Echinometra lucunter, but the dark tips and the greater length of the spines are distinctive.
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Scientific Classification
Phylum
Echinoderms Class
Sea urchins Order
Camarodonta Family
Echinometridae Genus
Echinometra Species
Reef urchin 
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