 However recent studies indicate that healthy lobsters move away from infected ones, leaving the diseased lobsters to fend for themselves.Like true lobsters, spiny lobsters are edible and are an economically significant food source; they are the biggest food export of the Bahamas, for instance.Many spiny lobsters produce rasping sounds to repel predators by rubbing the "plectrum" at the base of the spiny lobster's antennae against a "file".