Which organism would be classified as an arthropod?

Anthropods are invertebrates with segmented bodies and joint limbs. These organisms could be classified as anthropod. Exoskeleton, these are made of non-cellular cuticle called epidermis. The cuticle varies to their distinction. But Exoskeleton cannot stretch and grow. It restricts them to do so. So this is where the process of moulting starts.

The answer to your question is Crab