Lepas
Lepas is a genus of barnacles in the family Lepadidae, commonly known as goose barnacles or gooseneck barnacles. These marine crustaceans are filter feeders that attach themselves to hard surfaces, such as ship hulls, rocks, and whales. They are widely distributed throughout the world’s oceans and play an important role in marine ecosystems.
Characteristics
Lepas species are characterized by their elongated, stalk-like peduncles, which can reach lengths of up to 30 cm. The peduncle is covered in a tough, leathery skin and is used to attach the barnacle to its substrate. At the end of the peduncle is a capitulum, which contains the barnacle's body, including its feeding appendages, reproductive organs, and shell.
The shell of a Lepas barnacle is made up of six calcareous plates, arranged in a distinctive pattern. These plates provide protection for the barnacle and also help to support the animal's body. The feeding appendages, called cirri, are located within the capitulum and are used to capture food particles from the surrounding water.
Environments
Lepas barnacles are typically found in open ocean environments, where they can attach themselves to a variety of floating objects, such as ships, buoys, and driftwood. They can also be found attached to the skin of marine animals, such as whales and sea turtles. Lepas barnacles are typically found in warmer waters, but some species can tolerate cold temperatures.
Common Names
Lepas barnacles are commonly known as goose barnacles or gooseneck barnacles. These names refer to the barnacle's elongated peduncle, which resembles the neck of a goose. The name "goose barnacle" has its origins in a medieval belief that these barnacles were the eggs of geese.