Stylocidaris affinis explained

Stylocidaris affinis, also known as pencil urchin or red lance urchin,^[1] is a species of sea urchin.

It can be found in Bermuda, Caribbean Sea, Gulf Of Mexico, and the Mediterranean Sea. It occurs on circalittoral and deep sedimentary bottoms near Malta.^{[2] [3]}

Notes and References

1. Web site: pencil urchin - Encyclopedia of Life. 2021-11-10. eol.org.
2. Web site: WoRMS - World Register of Marine Species - Stylocidaris affinis (Philippi, 1845). 2021-11-10. www.marinespecies.org.
3. Terribile. K.. Schembri. P. J.. 2013. Depth distribution of Cidaris cidaris (Linnaeus, 1758) and Stylocdaris affinis (Philippi, 1845)(Echinodermata, Echinoidea) around the Maltese Islands. Commission Internationale pour l'Exploration Scientifique de la Mer Mediterranee.