This species is an irregular, egg-shaped sea urchin. It is found from Alaska (Aleutian Islands) to southern California and the Gulf of California (Lambert and Austin 2007). Heart Urchins are deposit-feeding species that ingest mud. Lambert and Austin (2007) say: "Heart Urchins are deposit feeders, ingesting mud as they move through it. They live below the mud surface but maintain a chimney to the surface with large modified tube feet to obtain oxygen."
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2019. E-Fauna BC:
Electronic Atlas of the Fauna of British Columbia [efauna.bc.ca]. Lab
for Advanced Spatial Analysis, Department of Geography, University of British
Columbia, Vancouver. [Accessed:
2020-02-28 11:32:31 AM]
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