yes somewhat they are...as i have learned in school, Sharks, skates, rays and chimaeras are closely related, and belong to the class of vertebrates known as Chondrichthyes. hope that is helpful! Xx
I don't know! I'm trying to find out the same answer. Can't believe nobody has answered.
Answer:
Scientists believe they both descended from a common ancestor.
Classified as Elasmobranchs the main similarities are 1) skeleton is made of cartilage (not bone like in other fishes) and 2) have 5-7 gill slits.
The skin of sharks and rays is also different from that of bony fishes. Comprised of "dermal denticles", also called "placoid scales" they are similar in structure to vertebrate teeth. They don't grow as the fish grows, but more are added.
Many share a common birth strategy where eggs are retained in the body where the young hatch out; it appears as if there is live birth.
There are biochemical similarities. For example, they retain urea to maintain the necessary chemical balance in salt water.
There are of course differences between sharks and rays other than their general shape. Sharks breath by drawing in water through the mouth, passing it over gills and then out the gill slits on the side of their head. Rays are generally bottom feeders (e.g. manta rays are not) so they have "spiracles" atop their heads to draw in water (otherwise would end up inhaling a lot of sand, grit etc.) , which passes over gills and then is expelled via gill slits on their underside.
sharks are not but rays are even though they both have lateral lines
All sharks are considered fish. If they were not a fish, it would be a whale. Whales are mammals, sharks are fish.
Sharks do have bones but it is not necessary called a bone. The bone is the jaw and the teeth. Rays do not have bones.
NO
Sharks, manta rays, and large bony fish
Sharks, Manta-Rays, Large Bony Fish.
No they do not have a skeleton they are structured by cartialage.
Bony Fish
Sharks,Manta Rays, and large bony fish.
it seems it is sharks, manta rays, and large bony fish
For the most part, they do not have bones. They have cartilage.
bony; the only cartilaginous fish currently in existence are sharks, skates, and rays.
Cartilaginous fish are mainly sharks and rays. They feed off bony fish, such as goldfish.
Starfish are preyed upon by sharks, manta rays, and large bony fish.
All save for sharks, rays and chimaeras. All other fish are bony fish (Osteichtyes).
Sharks are not bony fish. They are cartilaginous fish.