Because squid are considered to be invertebrates they have no bones, though they do have cartilage. When a squid dies all that is left behind is the beak as well as the hooks in the suckers, though this is only true for some species. You will not have to worry about the squid that you find at the grocery store having any bones in it whatsoever.
Squid is actually a fairly nutritious type of seafood to eat, though it may not be quite as popular as some other types of fish such as tuna or salmon. In squid you will find that there is a lot of omega-3 fatty acids which are highly beneficial to one’s health in a number of ways, including the fact that they can improve certain brain functions.