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Balanus crenatus
Balanus crenatus Bruguière, 1789
Crenate barnacle
photo by Telnes, Kåre

Family:  Balanidae ()
Max. size:  2 cm WD (male/unsexed)
Environment:  sessile; brackish; marine; depth range 1 - 182 m
Distribution:  Arctic, Eastern Pacific, Northern Atlantic and the Mediterranean: Canadian Arctic Archipelago and British Isles.
Diagnosis:   
Biology:  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).
IUCN Red List Status: Not Evaluated (N.E.) Ref. 123251)
Threat to humans: 
Country info:   
 

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