Lepadomorpha is a group of marine organisms belonging to the class Maxillopoda, which are small crustaceans. They are commonly known as barnacles and are characterized by their hard, calcareous shells. These creatures typically attach themselves to various surfaces, including rocks, ships, and even other animals, using a strong adhesive. Lepadomorpha are filter feeders, using their specialized appendages to capture plankton and other small particles from the water. They play an important role in marine ecosystems, contributing to the food web and serving as indicators of environmental health.