Lobsters are invertebrates classified under the phylum Arthropoda along with shrimp, crabs, and insects.
They have 10 legs, giving rise to the name decapod, that are jointed.
Lobsters have no internal bones and instead have an exoskeleton that acts as body armor for protection.
Lobsters have very poor eye sight, so they utilize two antennae as a sense of touch in order to gauge their surroundings.
Lobsters have two distinct claws for two purposes. One claw is the crusher claw, used for crushing shellfish and other prey, and the other is the pincher claw, which tends to be smaller and is used to tear food apart.
Lobsters have “swimmerettes” which are found along the tail. In females, the tiny hairs on the swimmerettes act as an attachment site for eggs. (Lobster Institute, n.d.)
Lobsters can regenerate legs, claws, and antennae. In some cases, if facing a threat, a lobster can self-amputate a claw to escape its predator. (Dog, n.d.)