Barnacles are marine invertebrates belonging to the Phylum Arthropoda and the Infraclass Cirripedia. They are sessile filter feeders and are some of the most conspicuous and well-known organisms on intertidal rocky shores. They have calcareous shells and feed by using their modified legs (or cirri) to sweep through the water, collecting tiny planktonic food. All of the introduced barnacles in ...more ↓
Barnacles are marine invertebrates belonging to the Phylum Arthropoda and the Infraclass Cirripedia. They are sessile filter feeders and are some of the most conspicuous and well-known organisms on intertidal rocky shores. They have calcareous shells and feed by using their modified legs (or cirri) to sweep through the water, collecting tiny planktonic food. All of the introduced barnacles in NEMESIS, except the parasitic barnacle Loxothylacus panopaei, are acorn barnacles. The shells of acorn barnacles are cemented directly to the substrate, in contrast to goose barnacles which are stalked. Barnacles grow on a wide range of hard surfaces including rocks, mangroves, dock pilings, boat bottoms, and mollusk shells. Exotic barnacles are most often introduced as accidental travelers through fouling on commercial and recreational boats or aquaculture shipments..
Often the most abundant barnacle in the upper half of the intertidal zone, and the most nearly ubiquitous barnacle species on the Pacific coast. It can obtain oxygen both from the air and underwater. Barnacles are hermaphrodites which fertilize one another internally by means of a long penis. The eggs are brooded by the parent, and released as nauplius larvae.
https://invasions.si.edu/nemesis/calnemo/GroupSummary.jsp?GRP=Crustaceans-Barnacles
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