The barnacle is a hardy animal that is found in or very closely to sea water. source
The barnacle is a hardy animal that is found in or very closely to sea water.
Barnacles are most often seen as roughly circular sessile invertebrates (which means that they cannot move on their own), source
Barnacles are most often seen as roughly circular sessile invertebrates (which means that they cannot move on their own),
Barnacles are often seen on crabs, whales, boats, rocks and on the shells of sea turtles. source
Barnacles are often seen on crabs, whales, boats, rocks and on the shells of sea turtles.
Barnacles have been found in depths up to 600 metres but 75 percent are usually found on rocks source
Barnacles have been found in depths up to 600 metres but 75 percent are usually found on rocks
The two most common types are acorn barnacles which grow their shells directly onto the surfaces and goose barnacles which grow from a stalk. There are up to 1200 known barnacle species. source
The two most common types are acorn barnacles which grow their shells directly onto the surfaces and goose barnacles which grow from a stalk. There are up to 1200 known barnacle species.
Barnacles are made up of several overlapping calcium plates that can be opened during feeding and mating and closed for protection from predators. source
Barnacles are made up of several overlapping calcium plates that can be opened during feeding and mating and closed for protection from predators.
Barnacles do have senses. They are very sensitive to touch using the tiny hairs on their limbs. They also have a singular eye capable of sensing light and dark. source
Barnacles do have senses. They are very sensitive to touch using the tiny hairs on their limbs. They also have a singular eye capable of sensing light and dark.
Barnacle can reach 0.4 to 2.7 inches in diameter, depending on the species. source
Barnacle can reach 0.4 to 2.7 inches in diameter, depending on the species.
Barnacle does not have heart and gills. It breathes through the body wall and via feathery appendages called cirri. source
Barnacle does not have heart and gills. It breathes through the body wall and via feathery appendages called cirri.
Barnacle is an omnivore. Its diet is based on plankton and algae. source
Barnacle is an omnivore. Its diet is based on plankton and algae.
Mating season of barnacles takes place during the autumn and winter (in the water of low temperature). source
Mating season of barnacles takes place during the autumn and winter (in the water of low temperature).
Barnacles are hermaphrodites (they possess both types of reproductive organs), but they don't reproduce via self-fertilization. source
Barnacles are hermaphrodites (they possess both types of reproductive organs), but they don't reproduce via self-fertilization.
Barnacles ; Fertilized eggs spend winter inside the sac. source
Barnacles ; Fertilized eggs spend winter inside the sac.
Barnacles undergo two larval stages: nauplius and cyprid, before they reach adulthood. Nauplius is free-swimming larva which transforms into cyprid 6 months after hatching. Cyprid phase lasts few days or few weeks. source
Barnacles undergo two larval stages: nauplius and cyprid, before they reach adulthood. Nauplius is free-swimming larva which transforms into cyprid 6 months after hatching. Cyprid phase lasts few days or few weeks.
Barnacle has a lifespan of 5 to 10 years. source
Barnacle has a lifespan of 5 to 10 years.
