Lobsters are mentioned very briefly in the game, School of Dragons, during the Expansion, "Wrath of Stormheart".
Lobsters, specifically Clawed Lobsters (Family Nephropidae), are 10-legged oblong crustaceans, known for their pincers. Lobster species live in all the world's oceans along the sea floor from the shoreline to the edge of the continental shelf. Typically Lobsters frequent burrows or rock crevices. Their diet consists of plant material, other crustaceans (and occasionally other lobster), various other invertebrates, worms, fish, jellyfish, and scavenging carcasses of various creatures. As with all crustaceans, lobster lack an internal skeleton and instead have an exoskeleton.
|“||The last type of shell is the chitinous shell; crabs, lobsters, and shrimp have a rigid skeleton on the outside of the body that is made of chitin. The chitin protects the delicate tissues and is watertight.||”|
|— Skulder in School of Dragons|
As yet, lobsters do not have a function in School of Dragons, other than for educational purposes.
In actuality, lobsters are a major crustacean food source for humans, and are caught world-wide for consumption.
Lobster are mentioned briefly in the "Wrath of Stormheart" Expansion. They are mentioned as examples of creatures with chitin exoskeletons.