The word, “mollusk” means soft, and mollusks are just that!
They don’t have skeletons or bones. Some have shells made of calcium.
Clams, mussels, octopus and squids are popular mollusks.
None of these animals have bones! These animals have interesting ways to protect themselves because they do not have bones.
For instance a squid uses ink to blind their predator if they are being hunted!
