Thecostraca | 
Balanomorpha | 
Balanidae
			
			
			
				Environment: milieu / climate zone / depth range / distribution range				
				
					Ecology				
				
			
			
				Sessile; brackish; depth range 1 - 182 m (Ref. 126559).  Temperate			
			
			
				
			
			
			
				Arctic, Eastern Pacific, Northern Atlantic and the Mediterranean:  Canadian Arctic Archipelago and British Isles.
			
			
			
			
			
				Length at first maturity / Size / Weight / Age
			
			
				Maturity: Lm ?  range ? - ? cm Max length : 2.0 cm WD male/unsexed; (Ref. 3719)			
			
			
						
			
			
			
			
				
					Most commonly found in the subtidal zone, on the underside of smooth rocks, but very infrequently on highly brackish water. Individuals occur as fouling organisms on ship bottoms and docks, inside crab carapace, mussle shells, and plate limpets, also in bottles, wood, and kelp (Ref. 126559). Naupliar stage larvae are found in the water column and are flushed back into the sea with the fresh water outflow. Larvae migrate into estuaries at a later stage where they settle (Ref. 126559). Found in muddy substrates associated with organic pollutants (Ref. 96352) and on mixed sediments with gravel, pebbles and sand (Ref. 118257).  This is an attached (Ref. 3123), epibenthic species (Ref. 95730).  Suspension feeder (Ref. 118257).  A microvore that feeds on organic detritus (Ref. 96352).				
			
			
			
			
			
				Life cycle and mating behavior				
					Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae				
			
			
				
					Members of the superorder Thoracica are mostly hermaphroditic.  Broadcast spawners, fertilization occurs in the mantle cavity.  Life cycle:  Eggs hatch into planktonic nauplii and leave the mantle cavity.  Afterwards, they undergo six naupliar instars succeded by nonfeeding cypris larva (settling stage) which later metamorphose into adults.				
			
			
			
			
			
				Organisation for Economic Co-operation and Development 1963 Volume 1. Barnacles. Catalogue of Main Marine Fouling Organisms. (Ref. 3719)
			
			
			
			
			
			
			
					
						IUCN Red List Status    
						 (Ref. 130435: Version 2025-1)
					
					
					
				
			
			
			
			
				CITES status   (Ref. 108899)
			
			
				
					Not Evaluated				
			
			
			
			
			
			
				
					Not Evaluated				
			
			
			
			
			
				Threat to humans  
			
			
				
									
			
			
			
			
			
			
			
			
				Human uses  
			
			
							
			
			
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Tools
			
			
			
			
				
					More information				
				
					 Population dynamicsGrowthMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionAbundance   Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae   PhysiologyOxygen consumption
  Human RelatedStamps, coins, misc.
  				 
			 
			
			
			
				Internet sources
			
			
			
			
			
				Estimates based on models
			
			
			
									
						Preferred temperature  					
				 (Ref. 
115969): 4 - 12.8, mean 9.1 (based on 674 cells).			
 
			
			
			
			
			
						
							
				
					
						Fishing Vulnerability  					
					
					
						Low vulnerability (10 of 100).					
				
						
						
			
									
						Price category  					
					
					Unknown.