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Whales are vertebrates, like all mammals. All whales are vertebrates. Fin whales, being mammals, are vertebrates.Vertebrates Vertebrates They are vertebrates, meani â¦ ng they have a spine or a backbone.. An easy way to remember this is that all warmblooded creatures are vertebrates.ll whales are vertebrates. Fin whales, being mammals, are vertebrates. Vertebrates Vertebrates They are vertebrates, meani â¦ ng they have a spine or a backbone..
   As Chordates (or members of the phylum Chordata), whales share the  following characteristics:     dorsal  nerve cord which is a bundle of nerve fibres which runs  down the back.It connects the brain with the lateral muscles and  other organs. notochord  which is a cartilaginous rod running underneath, and supporting,  the nerve cord-in the case of the whale, a spine.  post-anal  tail-an extension of the body past the anal opening.hey are also vertebrates, meaning they  have a skeletal system.    However, there is more to it than that, especially given that there  ar â¦ e two invertebrate chordate groups-Urochordata (tunicates) and  Cephalachordata (lancelets) - whose backbone is not in the form of  actual vertebrae.