Bay barnacle
A species of Amphibalanus Scientific name : Amphibalanus improvisus Genus : Amphibalanus
Bay barnacle, A species of Amphibalanus
Botanical name: Amphibalanus improvisus
Genus: Amphibalanus
Content
Description
Photo By Smithsonian Environmental Research Center , used under CC-BY-2.0 /Cropped and compressed from original 
Description
Amphibalanus improvisus has a smooth white or pale grey conical calcareous shell composed of six fused plates. There is an oval or rhombic opening at the top which is blocked by two hinged plates. Adults usually grow to about 10 mm (0.4 in) in diameter and 6 millimetres (0.24 in) in width though they are sometimes larger than this and can grow taller when densely packed. The base is characteristically grooved radially. This species can be confused with the striped barnacle (Amphibalanus amphitrite) and in European waters with the northern rock barnacle (Semibalanus balanoides) or the rock barnacle (Balanus crenatus).
* Disclaimer: The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.
Photo By Smithsonian Environmental Research Center , used under CC-BY-2.0 /Cropped and compressed from original 
Scientific Classification
Phylum
Arthropods Class
Maxillopoda Order
Sessile barnacles Family
Balanidae Genus
Amphibalanus Species
Bay barnacle 
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