The Diadematidae are a family of sea urchins. Their tests are either rigid or flexible and their spines are long and hollow.[2]

Diadematidae
Diadema setosum in Oman.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Echinodermata
Class: Echinoidea
Order: Diadematoida
Family: Diadematidae
Gray, 1855 [1]

Senses

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Like other sea urchins diadematids are sensitive to touch, light, and chemicals; additionally they do have eyes (eye spots) which is in contrast to other sea urchins. Because of this they can follow a threat with their spines.[4]

Images

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References

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  1. ^ "Diadematidae". Integrated Taxonomic Information System.
  2. ^ Maran, Vincent (2010-11-11). "Astropyga radiata (Leske, 1778)". DORIS (in French). Retrieved 2013-01-22.
  3. ^ "Black Sea Urchin". Museum Victoria. Retrieved 2011-05-13.
  4. ^ Knight, K. (2009). "Sea Urchins Use Whole Body As Eye". Journal of Experimental Biology. 213 (2): i–ii. doi:10.1242/jeb.041715.

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