Keyhole Urchin in Worcester Co., Maryland (8/4/2019). (c) aberkov, all rights reserved. Photo by aberkov via iNaturalist. (MBP list)
Keyhole Urchin in Worcester Co., Maryland (6/5/2013). (c) Kimberly Emerson, some rights reserved (CC BY-ND). Photo by Kimberly Emerson via iNaturalist. (MBP list)
Keyhole Urchin in Worcester Co., Maryland (6/5/2013). (c) Kimberly Emerson, some rights reserved (CC BY-ND). Photo by Kimberly Emerson via iNaturalist. (MBP list)
A Keyhole Urchin found off the Chesapeake Bay Bridge-Tunnel (CBBT), Virginia (12/4/2013). Photo by Robert Aguilar, SERC. (MBP list)