An example of an invertebrate with a hard shell is a lobster. Lobsters are crustaceans that have a tough exoskeleton made of chitin, which helps protect their soft bodies.
invertebrate - has exoskeleton
An invertebrate.
It is an invertebrate 
no
A bullfrog is not an invertebrate; it has a spine.
The octopus is an invertebrate... It has no skeleton.
seriously? wow....... did you pass 4th grade? invertebrate
An invertebrate doesnt have a backbone. A vertebrate has a backbone.
Crabs are invertebrate!Say the yeti crab has no backbone or spine so it is an invertebrate! Not vertebrate.Yes, all crabs are invertebrates, having an external skeleton (exoskeleton).
The function of the exoskeleton is to protect the internal organs and support the crayfish because it is an invertebrate.
invertebrate