=Well the true answer is they are not smallier to humans... cuz i d k=
Bone. The same as yours. Sharks have cartilaginous skeletons, but whales are mammals, with skeletons like humans or dogs or elephants.
swim bladder.
sharks, skates, and rays have skeletons made of cartilidge
cause they dont! !
Yes
No they are made of cartilage
same as other sharks: mackeral skeletons kingfish skeletons etc. be sure to make a good berley trail!!
Internal skeletons are structural systems found inside the bodies of animals, providing support and protection for their organs. These skeletons can be made of bone (as in mammals), cartilage (as in sharks), or a combination of both. Internal skeletons allow for greater flexibility and movement compared to external skeletons like shells or exoskeletons.
Chondrochthyes, i.e., the cartilagenous fishes, like sharks, posses cartilagious skeletons.
Neither. Sharks are primitive fish, with cartiledge skeletons.
Sharks and jawless fish have cartilaginous skeletons, meaning their skeletons are comprised of cartilage.
Sharks and Stingrays both do not contain any bones in their bodies. All invertebrates have no "bones". Vertebrates have "bones". Read a book on biology. Sharks, dogfish and rays are all vertebrates but have skeletons composed of cartilage not bone. ---- Wtf... Sharks have sharp, pointy teeth. What are teeth made out of? Bones! Sharks have bones.