Echinoidea | 
Camarodonta | 
Strongylocentrotidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Benthic; depth range 0 - 300 m (Ref. 78719), usually 0 - 50 m (Ref. 113749).  Temperate; 79°N -   37°N, 127°E -   97°E			
			
			
				
			
			
			
				Northern Pacific, Northern Atlantic and the Arctic.  Temperate to polar.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm 2.5  range ? - ? cm Max length : 10.0 cm WD male/unsexed; (Ref. 865); max. reported age: 45 years (Ref. 90469)			
			
			
						
			
			
			
			
				
					It is found on rocks and soft bottoms from the intertidal to a depth of 300 meters (Ref. 865).  Also in tidepools in the low intertidal, found on bedrock outcrops, boulders, cobbles, occasionally in sand (Ref. 113749).  Primarily feeds on seaweeds, with few feeding on eelgrass (Ref. 106946).  Also feeds on bivalves, gastropods and benthic crustaceans (Ref. 85579).				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
					Members of the class Echinoidea are gonochoric.  Fertilization is external.  Brooding is common, eggs are held either on the peristome, around the periproct or deep into the concavities on the petaloids.  Life cycle:  Embryos develop into planktotrophic larvae (echinoplateus) and live for several months before they sink to the bottom using their tube feet to adhere on the ground where they metamorphose into young urchins.				
			
			
			
			
			
				Berkes, F., T.P. Hughes, R.S. Steneck, J.A. Wilson, D.R. Bellwood, B. Crona, C. Folke, L.H. Gunderson, H.M. Leslie, J. Norberg, M. Nyström, P. Olsson, H. Österblom, M. Scheffer and B. Worm 2006 Globalization, roving bandits, and marine resources. Science. 311:1557-1558. (Ref. 861)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (Ref. 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (Ref. 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				Threat to humans  
			
			
				
									
			
			
			
			
			
			
			
			
				Human uses  
			
			
				Fisheries: commercial			
			
			
				 | FishSource | Sea Around Us			
			
			
			
			
			
Tools
			
			
			
			
				
					More information				
				
					 PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  
			 
			
			
			
				Internet sources
			
			
			
			
			
				Estimates based on models
			
			
			
									
						Preferred temperature  					
				 (Ref. 
115969): 0.8 - 10.2, mean 5.2 (based on 977 cells).			
 
			
			
			
							
					Resilience  				
				
				
					High, minimum population doubling time less than 15 months (K=0.12-0.84; tm=2.5; tmax=45).				
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Moderate to high vulnerability (46 of 100).					
				
						
						
			
			
			
				Nutrients  :  Calcium = 126 [75, 177]  mg/100g; Iron = 5.08 [1.67, 7.92]  mg/100g; Protein = 12%; Omega3 = 0.331 [0.263, 0.400]  g/100g; Selenium = 0.04 [48.48, 67.17]  μg/100g; VitaminA = 0 μg/100g; Zinc = 1.97 [0.92, 3.02]  mg/100g (wet weight); based on 
nutrient studies.