Gulella salpinx, the Trumpet-mouthed Hunter Snail, is a critically endangered species found only in the Marble Delta region, inland of Port Shepstone in southern KwaZulu-Natal. It is a highly distinctive species on account of its stongly ribbed shell and disjunct flaring aperture.
The region in which it occurs is hightly disturbed and extensively mined on account of the rich carbonate resources in the underlying rocks.