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Heterocentrotus mammillatus in 10 steps from the beach. If you'll step on him, the needles will harm your legs and will be broken after penetrating under skin. Poison is weak. For healing local medic will brake crush them with small hammerhead. In 3-5 days the crushed pieses of the needles will be dissolved in your body. #Heterocentrotus

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Pencil Urchin - Heterocentrotus sp.

A stunning close up of the surface of a Pencil Urchin, probably belonging to the genus Heterocentrotus (Echinometridae), whose spines are very thick and dense, with three or more flattened facets.

Photo credit: ©Mike Roberts | Locality: not indicated (2005)

#nature #animals #pencil urchin #heterocentrotus #sea urchin #location unknown #echinodermata #echinoidea #echinoida #echinometridae #red #zoology #original

Slate Pencil Urchin - Heterocentrotus mamillatus

The characteristic spines of the sea urchin Heterocentrotus mamillatus (Echinoida - Echinometridae) really seem crayons, hence its common name.

Spines of sea urchins are appendages that are associated with defense, locomotion, and food gathering. Spines form an important part of an urchin's maintenance mechanisms, and it is no surprise to find that they are repaired rapidly once damaged.

This species is found in tropical waters of Eastern Africa, Kenya, Madagascar, Marsa Shagra, Mascarene Basin, Mauritius, Red Sea, Seychelles and the West Indian Ocean.

Other common names: Red slate pencil urchin, Red pencil urchin.

References: [1] - [2] - [3]