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Sharks and rays belong to a class of animals known as Chondrichthyes (say it : Con - Dree- Ek - theees) which are known as the cartilaginous fishes.
These animals DO have bones, but not bone tissue like ours, their bones are made out of cartilage and do not contain bone marrow like us, so their red blood cells are produced in their spleens. Their teeth which are harder than their caritlage bones are made out of calcified tissue called dentine and hard enamel which would more closely resemble the structure of human teeth but they are not bones in the sense that they are calcified tissue which is a support structure for our bodies.
Other animals in this class which are not sharks or rays are the Chimaeras, which look like a mixture of a shark and a ray, and are also known as Ghostfish, and the Skates which are another weir looking animal which resemble neither a shark or a sting ray.
What else can I help you with?
Do fish have wish bones?
Yes, fish have bones. Some fish have cartilige (e.g sharks and rays)
How do sharks and rays differ from perch and goldfish?
because sharks are big then rays and perch and goldfish..
What does a Elasmobranchology do?
they study sharks and rays
Do all fish have bones?
Yes, all fish have bones. In fact, all fish are vertebrates, so they all have vertebrae (a spine or backbone).
How do you compare and contrast rays with sharks?
Both rays and sharks are cartilaginous fish with skeletons made of cartilage instead of bone. While rays typically have flat bodies and a ventral mouth, sharks have cylindrical bodies and teeth in multiple rows. Additionally, rays are generally bottom-dwellers while sharks are more active swimmers.
Are sharks and rays bones made of cartilage?
yes
Which fish does not have bones?
Most fish have bones. Sharks and rays do not have bones but they do have bone-like structures that are made from cartilage.
Does halibut have bones?
Yes. Most fish apart from sharks and rays have bones.
Do fish have wish bones?
Yes, fish have bones. Some fish have cartilige (e.g sharks and rays)
What do sharks and rays have in common?
they are alike because they are both living things and they both eat and they both are carnivores
Why are sharks skates and rays places in their own class?
because they both don't have bones.
Why are sting rays and sharks not classified as bony fish?
For the most part, they do not have bones. They have cartilage.
10 animals that don t have bones?
whales,Sharks,snakes,snails and frogs donot have bones
What hard tissue is found in vertebrates?
Bones and cartilage are found in most all vertebrates, with the exception of sharks and rays, which only have cartilage.
What are Sharks and rays are examples of what kind of fishes members of the class Chondrichthyes?
They have cartilage instead of bones for a skeleton. Chondo- means cartilage.
What are called elasmobranch?
Elasmobranch is a class of fishes with bones made of cartilage. It includes sharks, skates and rays. Cartilage is the material that is in your nose and ears. Their only real bones are teeth and jaws. They are a very old, successful class of fishes. There were sharks before there were dinosaurs. Because they lack bones, there are very few fossils of older sharks. Sharks are endangered now because their cartilaginous fins are prized for soup in some cultures.
What type of ray has a poison spine by the tip of its tail?
Rays, and sharks, have no bones, so how can any species of ray have a spine which poisons anything?
