Thatched barnacle
A species of Semibalanus, Also known as Horse barnacle Scientific name : Semibalanus cariosus Genus : Semibalanus
Thatched barnacle, A species of Semibalanus
Also known as:
Horse barnacle
Botanical name: Semibalanus cariosus
Genus: Semibalanus
Content
Description
Photo By Minette Layne , used under CC-BY-SA-2.0 /Cropped and compressed from original 
Description
This barnacle has six wall plates which are sculpted with vertical tube-like ribs which extend downwards onto the rock in projections rather like the edge of a thatched roof. The rostrum overlaps the wall plates and the terga form a beak when the barnacle is closed. There is a sinuous line at the junction between the tergum and the scutum. This is a large species of barnacle and can grow to a diameter of 6 cm (2.4 in), but when densely packed together, individuals may be much taller than they are wide. The wall plates are white, greenish, brownish or gray. The base of the barnacle is little calcified so that when it is broken from the rock, a membrane and some soft tissues may be left behind.
* 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.
Scientific Classification
Phylum
Arthropods Class
Maxillopoda Order
Sessile barnacles Family
Archaeobalanidae Genus
Semibalanus Species
Thatched barnacle 
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