Hold on there terp,maybe not a sea turtle but...
Any of various North American aquatic turtles of the family Emydiolae, especially the genus Malaclemys, which includes the diamondback terrapin.
Any one of numerous species of tortoises living in fresh and brackish waters. Many of them are valued for food.
any of various edible North American web-footed turtles living in fresh or brackish water.
[Written also terapin, terrapen, terrapene, and turapen.]
Vicious Brackish Water Diamondback Turtles