powelliphanta giant snail predated by a possum, west coast, new zealand

1080 air animal breathing brown carnivorous closeup creature dead earthworms eaten eating empty endangered endemic exterminate extinction family gastropod gastropods giant hand invertebrate invertebrates land large macro mollusc native nature palm poison possums powelliphanta predated protected protein pulmonate rats rhytididae shell skin slow snail snails species spiral threatened wild wildlife new zealand