Meet the Western Rock LobsterArticle | Updated 7 years ago Western Rock Lobster WA Museum The Western Rock Lobster, or Panulirus Cygnus, is also known as a crayfish. Western Rock Lobster Image copyright WA Museum Appearance This harmless, omnivorous lobster can grow to a maximum size of 30 cm. It is red in colour, and has many tiny forward pointing spines covering its body and carapace. Its most prominent feature are two large antennae that protrude from the head. Habitat The Western Rock Lobster can be found from North West Cape to Hamelin Bay near Augusta, Western Australia. It lives in coastal waters at depths from the tidal region down to 150 m to 200 m. A Commercial Species This crustacean forms the basis of the largest single-species fishery in Australia, and is highly valued for its meat in many countries.