Facts about Diamondback Terrapin
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Once considered a delicacy, diamondback terrapin populations were severely depleted by commercial hunting in the late 19th and early 20th centuries.
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In 1997, Maryland designated the diamondback terrapin as its official state reptile due to ecological importance and cultural significance in Chesapeake Bay ecosystems.
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During nesting season from May to July, female diamondback terrapins migrate to sandy beaches to deposit clutches of 4 to 18 eggs in single burrows.
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Hatchling diamondback terrapins measure only 1 to 1.3 inches in shell length, making them among the tiniest turtle hatchlings in North America.
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Diamondback terrapins possess specially adapted lower jaws that can exert crushing force exceeding 1,000 pounds per square inch, enabling them to break through mollusk shells.
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Crab shells comprise up to 90 percent of diamondback terrapin diets, with their powerful jaw muscles capable of crushing the hard exoskeletons of blue crabs and periwinkles.
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Predation by raccoons and foxes destroys approximately 90 percent of diamondback terrapin nests in some coastal regions, making nest protection critical for population recovery.
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Diamondback terrapins can live 40 years or more in the wild, making them one of North America's longest-lived turtle species.
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Female diamondback terrapins possess temperature-dependent sex determination, with eggs incubated above 80 degrees Fahrenheit typically producing females and cooler temperatures producing males.
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The diamondback terrapin's salt glands allow it to excrete excess sodium chloride, making it the only turtle species capable of surviving in brackish coastal marshes from Cape Cod to Texas.