Apple snail remains after being preyed upon by a raccoon

Figure 1. Apple snail remains after being preyed upon by a raccoon at Mandalay National Wildlife Refuge. Circled on the left is the operculum with some flesh still attached. Circled on the right is the ovary, presumably left because it contains the same poisons used to protect the egg masses. The snail’s shell is at the top of the picture. (J. Carter, USGS 2017)