No, shellfish do not have backbones because they have exoskeletons.
Invertebrates are animals without backbones, such as worms, shellfish, and in almost all vertebrates, bone gives the skeleton its strength.
no. shrimp belong to a group of animals called crustaceans and they have exosketons that is an external skeleton that supports and protects an animal's body, not an internal skeleton like bones and spine.
No there is more with backbones
The plural of shellfish is shellfish.
No backbones
Pigs do have backbones.
it has 2 backbones
All snakes have backbones.
all fishes have backbones
no they don't have backbones
The backbones are part of the skeleton.
no myriapods don't have backbones