Clean barnacles from animals.
Barnacles are hermaphrodites and most undergo cross-fertilization. During reproduction, telescopic tubes are used to send sperm into other barnacles to fertilize eggs. The fertilized egg undergoes metamorphosis and develops from a juvenile to an adult barnacle. In tropical sea areas, this type of organisms can reproduce and settle all year round, and the species and quantity decrease the further from the shore.
Barnacles attached to coastal docks, ship bottoms, submarine cables, etc. often cause serious damage. For example, barnacles attached to ship hulls significantly reduce sailing speed.
The larval stage of barnacles undergoes a series of changes: planktonic, nauplii and glandular larvae. Glandular larvae are a special form of larvae that do not needno food. This step simply involves choosing a suitable location for attachment and metamorphosis. Swimming larvae are attracted to flowing water and attach themselves to the substrate, where they begin to move using their small antennae.
This attachment is reversible. If the larvae do not metamorphose, they can return to the swimming stage because they retain the ability to swim. Once the larva is attached, it begins to explore various aspects of the physical and chemical properties of the substrate to which it is attached.