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An adult barnacle

Barnacle

An adult barnacle

The Goose Barnacle has a body resembling a clam, attached by a soft, flexible stalk to some solid object.

Barnacle

The Goose Barnacle has a body resembling a clam, attached by a soft, flexible stalk to some solid object.

"An animal of one of the lower orders. It fastens itself to some floating object and becomes glued to it by a secretion of cement, and develops a valved shell."

Barnacle

"An animal of one of the lower orders. It fastens itself to some floating object and becomes glued to…

The barnacle is a type of fixed crustacean.

Barnacle

The barnacle is a type of fixed crustacean.

The modern ship- or goose-barnacle after removal of the right valve.

Ship Barnacle

The modern ship- or goose-barnacle after removal of the right valve.

"The Common Barnacle, <em>Lepas anatifera</em>, perhaps the best-known example of the order, generally selects floating objects for this purpose, and frequently covers the bottoms of ships to such an extent as to even impede their progress through the water. It adheres by a flexible stalk, which possesses great contractile power. The shell is usually composed of two triangular pieces on each side, and is closed by another elongated piece on the back." &mdash; Goodrich, 1859

Barnacles

"The Common Barnacle, Lepas anatifera, perhaps the best-known example of the order, generally…

A barnacle is a type of arthropod belonging to infraclass Cirripedia in the subphylum Crustacean, and is hence distantly related to crabs and lobsters. Barnacles are exclusively marine, and tend to live in shallow and tidal waters, typically in erosive settings. They are sessile suspension feeders, and have two nektonic larval stages. Barnacles are encrusters, attaching themselves permanently to a hard substrate. Shown is a barnacle larva.

Barnacles

A barnacle is a type of arthropod belonging to infraclass Cirripedia in the subphylum Crustacean, and…

A barnacle is a type of arthropod belonging to infraclass Cirripedia in the subphylum Crustacean, and is hence distantly related to crabs and lobsters. Barnacles are exclusively marine, and tend to live in shallow and tidal waters, typically in erosive settings. They are sessile suspension feeders, and have two nektonic larval stages. Barnacles are encrusters, attaching themselves permanently to a hard substrate. Shown is a developed adult barnacle.

Barnacles

A barnacle is a type of arthropod belonging to infraclass Cirripedia in the subphylum Crustacean, and…

A clam with hydriods growing upon its shell.

Hydriods

A clam with hydriods growing upon its shell.