How to pronounce “gastropod” in English

And if you cut through a chambered nautilus, which is this shell here, you get a pretty good approximation to that logarithmic spiral in two dimensions.And if you look at lots of different mollusks, many of the gastropods with the spiraling shells, the snails, as well as these the natutilises,and various other, the bivalves too, clams and so on, they do still have spirals in their shells.