Are sharks invertebrates?
Sharks are not invertebrates, they have a vertebrae. It is just made out of cartilage, as opposed to bone.
It is unlikely that they do at all. Elasmobranchs such as rays and sharks lack nociceptors, the nerves that translate noxious stimuli into neural signals. Nociceptors appear in bony fish and basically all later vertebrates, as well as some invertebrates, but are absent in cartilaginous fish such as sharks.
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.
Do sharks have backbones are sharks vertebrates or invertebrates what do sharks have in their back how do sharks bend their tail so bendly how are they so flexible with their tail are they cute?
Sharks do have backbones, making them vertebrates. Their skeletons are made mostly of cartilage and not actual bone, being of a more ancient classification of fish in evolutionary terms. Whether something is cute or not is subjective, however sharks aren't exactly an animal that have the head/body porportions similar to what humans usually see as cute, they don't look neotonous (like babies).