The northern subspecies of the diamondback terrapin occurs along the Atlantic coast from Cape Cod, Massachusetts, to Cape Hatteras, North Carolina. Other subspecies are found from Cape Hatteras south to the Florida Keys and west along the Gulf Coast and the Texas coastline.
Male terrapins are smaller than the female, weighing an average of 0.5 pounds and measuring 4-5.5 inches in length. Females weigh an average of 1.5 pounds and measure 6-9 inches long.
Spot adorable diamondback terrapins swimming and floating along the bottom of their watery exhibit. Diamondback terrapins are found from Massachusetts through Texas, although the northern subspecies is found only from Massachusetts through Virginia.