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Diamondback terrapin

life science Maturity 5-7 Next article →

The diamondback terrapin is a special turtle found near the ocean.

Diamondback turtle adult female
Diamondback turtle adult female

They live in brackish marshes along the East Coast of the United States. This means they live where salt water and fresh water mix. Their home stretches from Cape Cod in the north down to the Florida Keys. They also live along the Gulf of Mexico coast and in Bermuda. The name "terrapin" comes from an Algonquian word. Early settlers used this name for turtles that lived in neither the sea nor fresh rivers.

Malaclemys terrapin, Galveston Co., Texas; 8 May 2008
Malaclemys terrapin, Galveston Co., Texas; 8 May 2008

These turtles have amazing ways to stay healthy in salty water. Their skin does not let much salt in. They also have salt glands, which are special parts that help them manage salt. If they need fresh water, they act very clever. They can drink the fresh layer of water that sits on top of salt water after rain. They might even raise their heads to catch raindrops in their mouths!

They are strong swimmers with large webbed feet. However, they do not have flippers like sea turtles do.

Every diamondback terrapin looks a little bit different. Their shells, called carapaces, often have a diamond pattern. Some shells are brown and some are grey. No two turtles have the exact same markings. The shells are usually wider at the back than the front. This gives them a wedge shape. Males and females are different sizes, which is called sexual dimorphism. Males are smaller, often around 125 millimeters long. Females are much larger and can grow to 175 millimeters or more.

Diamondback Terrapin. Taken by CITES
Diamondback Terrapin. Taken by CITES

There are seven different subspecies of these turtles. For example, the Texas diamondback terrapin lives in Texas. The northern diamondback terrapin lives in places like New York and Delaware. In the wild, these turtles usually live for about 25 years. In captivity, they can live up to 40 years. Females have very strong jaws to help them eat. They use these muscles to crush hard shells from clams and snails. This helps them eat many different things like crabs and worms.

Today, these turtles face many hard jobs to stay safe. In the early 1900s, people hunted them almost to extinction. Now, they can get stuck in crab traps. In New Jersey alone, about 14,000 to 15,000 terrapins drown in these traps every year. They can also be hurt by boat propellers. Building walls near the shore also takes away their nesting spots. Because of these problems, some states list them as endangered or threatened. We can learn how they live to help protect them.

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🖼️ Images & Media (4)
File:Diamondback turtle adult female.jpg
Diamondback turtle adult female.jpg
File:Malaclemys terrapin, Galveston Co., Texas; 8 May 2008.jpg
Malaclemys terrapin, Galveston Co.,...
File:Diamondback Terrapin. Taken by CITES.png
Diamondback Terrapin. Taken by CITES.png
File:Testudo 2.jpg
Testudo 2.jpg
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