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Other animals › Arbaciidae

Purple-brown Urchin

Arbacia punctulata

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Wildlife study photograph from iNaturalist.
(c) jackson_right, some rights reserved (CC BY-NC)

25 photos

Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.

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Easily confused with

Study checks a spoken answer against these, and tells you which one you named.

Where it is recorded

Records by month in Massachusetts.January 23, February 21, March 25, April 41, May 77, June 35, July 30, August 32, September 33, October 32, November 24, December 22.
United States2,044
Massachusetts394
South Carolina335
North Carolina156
Rhode Island82
Virginia74
Georgia71
Texas49
New York39
New Jersey33

Counts show where people looked, not only where it lives.

Traits

Physical

  • RegenerationCan regrow lost body partsFrom its classification

Classification

KingdomAnimals · Animalia
PhylumEchinoderms · Echinodermata
ClassSea Urchins, Sand Dollars, and Heart Urchins · Echinoidea
OrderArbacioida
FamilyArbaciidae
GenusArbacia

Sources

Remember the name next time.

Practise Purple-brown Urchin with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.

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