What kind of invertebrate is a lobster?

Crustaceans are a diverse group of invertebrates that include crabs, shrimp, barnacles, and more. They share several characteristics, including:

* Exoskeleton: A hard, protective outer shell made of chitin.

* Jointed limbs: Legs and other appendages that move at specific joints.

* Segmented bodies: Their bodies are divided into distinct sections.

* Two pairs of antennae: These are sensory organs used for touch and smell.

Lobsters are specifically classified as decapod crustaceans, meaning they have ten legs.