It is the ossicles :)
The bony plates that make up a starfish's skeleton is the ossicles. They are found in not only starfish but sea cucumbers and sea urchins also.
The bony plates of a starfish are made up from calcium carbonate. When the starfish dies, the skeleton usually denigrates and nothing remains except for the oral disk.
They make up the skeleton and protect internal structures.
the cr]acka pollies
The endoskeleton
calcareous plates
Nemo, a clownfish, is a bony fish, which means it has a skeleton primarily composed of bone. Bony fish are the largest group of fish species and make up the majority of fish found in both freshwater and saltwater environments.
Napoleon Bonaparte's nickname was Bony.
Star+Fish=Starfish =)
Starfish ARE 3-d creatures!
The bony plates on an Armadillo are it's main source of defense against predators. The skin between the plates allow the Armadillo to curl itself into a ball to deter predators. Not all Armadillos are able to curl up into balls however. Not all of the 20 species can curl up in a ball. The species in the U.S. curls, but can't make it all the way into a ball. Bill Klemm, author of Dillos. Roadkill on Extinction Highway?
Some disadvantages of having a cartilaginous skeleton include limited support and protection for the body compared to a bony skeleton, which may make the organism more vulnerable to injury. Cartilage is also less capable of withstanding heavy loads and may not provide as much stability for movement. Additionally, cartilage can be more prone to degradation and wear over time.