no it's justit'sshelling! no it's justit'sshelling!
they have no backbone because they are invertebrates and therefore they have no vertebrae being the backbone
totally!!they hav a short backbone but a backbone none-the-less
no a sea cucumber does not have a backbone.
they have a backbone
NO they do not
no
Chordates such as the sea squirts and lancelets do not have a backbone that is why they are called vertebrate chordates.
no they are invertabrates
No The Sea sponge is a invertebrate
Invertebrate animals have no backbone. You can find more about these animals on WikiAnswers with the search of "Invertebrates." If you cannot find any questions with that surch you can ask the question and wait for someone to reply. Also, insects, worms, leeches, star fish and sea urchin are some examples of Invertebrates.
A sea star is called a sea star simply because of where it lives (the sea) and what it looks like (a star), simple!
it has no bones