PANTHER POINT. Panther Point is a cape (at 28°13' N, 96°42' W) on the western end of Matagorda Island that extends into San Antonio Bay in southwestern Calhoun County. The local terrain consists of tidal marshes with poorly drained sandy loam soils; the water stands twenty inches deep in the marsh. There is little vegetation except for some coastal grasses. Panther Point is too marshy for settlement but provides a habitat for a wide variety of sea life, including clams and snails.