Gastropoda | 
Nudibranchia | 
Facelinidae
			
			
			
				Environment: milieu / climate zone / djupintervall / distribution range				
				
					Ekologi				
				
			
			
				;  djupintervall 0 - 28 m (Ref. 865).  Subtropical			
			
			
				
			
			
			
				Pacific Ocean and the Arctic.   Subtropical to polar.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Könsmognad: Lm ?  range ? - ? cm Max length : 7.0 cm TL hane/ej könsbestämd; (Ref. 844); common length : 8.0 cm TL hane/ej könsbestämd; (Ref. 312)			
			
			
						
			
			
			
			
				
					Found in oyster beds in bays in low to subtidal zones.  Carnivorous; preys on hydroids, small sea anemones, bryozoans, worms, small crustacea, tiny clams, and even dead animals. Does not digest stinging capsules (nematocysts) of their prey.  Instead the nematocysts are moved to the tip of the cerata and incorporated into the creature's own defense system (Ref. 312).				
			
			
			
			
			
				Life cycle and mating behavior				
					Könsmognad | Reproduktion | Lek | Eggs | Fecundity | Larvae				
			
			
				
					Members of the order Nudibranchia are simultaneous hermaphrodites.  Mating behavior:  Both individuals darts their penis toward each other to induce one to act as a male and the other as the female.  The victorious one to penetrate the body wall is the dominant male.  Life cycle:  Eggs are deposited on a substratum where they develop and hatch into (planktonic) vestigial veliger larval stage and further grow as adults.				
			
			
			
			
			
				Gallivan, G. and J. Danforth 1999 Phylum Mollusca. Marine Science Institute. Http://216.239.51.104/search?q=cache:EEiLeA0OeAMJ:www2.ucsc.edu/simp/guide.pdf+Nuttalina+californica&hl=tl&gl=ph&ct=clnk&cd=8 [accessed 20/01/06] (Ref. 312)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (Ref. 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (Ref. 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				Threat to humans  
			
			
				
									
			
			
			
			
			
			
			
			
				Human uses  
			
			
							
			
			
				 | FishSource | 			
			
			
			
			
			
Verktyg
			
			
			
			
				
					Ytterligare information				
				
					 Population dynamicsTillväxtMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionAbundans   PhysiologySyreförbrukning
  Human RelatedStamps, coins, misc.
  				 
			 
			
			
			
				Internet-källor
			
			
			
			
			
				Estimates based on models
			
			
			
									
						Preferred temperature  					
				 (Ref. 
115969): 5.1 - 18.7, mean 9.7 (based on 888 cells).			
 
			
			
			
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Low vulnerability (10 of 100).					
				
						
						
			
									
						Price category  					
					
					Unknown.