Balanidae
From Natural History of Southeast Alaska
Family: Balanidae
Group: Marine Invertebrate, Species
Scientific Name | Common Name | Summary |
---|---|---|
Balanus crenatus | Crenate barnacle | This barnacle is common in harbors and on the hulls of boats. Unlike Balanus balanus, this species does not have its scuta pointed up like a beak. |
Balanus nubilus | Giant acorn barnacle | This barnacle is usually found as an empty, cast-off shell of such disproportionate dimensions that beachcombers tend to think they have found some deep-sea giant or aberrant formation. However, this species is found intertidally on such treacherous surf-beaten rocks that few people ever see it. It is also seen subtidally by divers. This species grows to six inches across the base, and when small can be distinguished from worn specimens of Thatched acorn barnacle (Semibalanus cariosus) by the absent of longitudinal striations on the scuta. |