 The plain maskray generally hunts at the surface of the bottom substrate , rather than digging for prey . Its diet consists predominantly of <unk> shrimp and polychaete worms . Small bony fishes are also eaten , along with the occasional <unk> <unk> or <unk> . Larger rays consume a greater variety of prey and relatively more polychaete worms when compared to smaller rays . This species is <unk> by the <unk> <unk> <unk> . 
