A name for the Moreton Bay bug, a type of sand lobster. Sand lobsters are any of a variety of small crustaceans bearing a resemblance to lobsters. There are many of them, including bay bug, bay lobster, shovel-nosed lobster and rudder-nosed lobster which is similar to a slipper lobster. Moreton Bay bugs and Balmain bugs are available commercially. Moreton Bay bugs are slightly more triangular than the Balmain bug.