# Diamondback Terrapin (*Malaclemys terrapin*) The Diamondback Terrapin is a beautiful turtle with diamond-shaped patterns on its shell. They love to munch on crabs and clams! - **Category:** [Reptiles](https://www.snappit.app/explore/categories/reptile) - **Rarity:** Common - **Danger:** 2/5 · Low - **Snaps:** 33 - **Habitat:** Coastal marshes - **Also known as:** Salt Marsh Terrapin, Terrapin ![Diamondback Terrapin](https://res.cloudinary.com/drieglelr/image/upload/v1771424508/objects/5720.jpg) ## Appearance The Diamondback Terrapin has a distinctive, usually gray to brown, shell adorned with concentric ridges forming diamond-like patterns. Its skin is unique, ranging from gray to black with striking black spots, dashes, or swirls on its head and limbs, differentiating it from other turtles. ## Taxonomy - **Kingdom:** Animalia - **Phylum:** Chordata - **Class:** Testudines - **Order:** Testudines - **Family:** Emydidae - **Genus:** Malaclemys ## Interesting facts - Each terrapin's shell pattern is unique, like a human fingerprint! - Terrapins got their name from an Algonquian word meaning 'little edible turtle'. - The warmth of the sand determines if a baby terrapin will be a boy or a girl. - They can hold their breath underwater for a very long time, up to several hours! ## Special abilities - **Brackish Water Master:** Diamondback Terrapin has special salt glands near its eyes that help it excrete excess salt, allowing it to thrive in coastal brackish waters. - **Powerful Jaw Crusher:** Diamondback Terrapin can crush hard-shelled prey like crabs and clams because of its strong, muscular jaws and flat chewing surfaces. - **Hydrodynamic Swimmer:** Diamondback Terrapin has webbed feet and a streamlined shell that helps them glide efficiently through estuarine waters. ## Measurements & details - **Length:** 10-23 cm - **Weight:** 0.1-1.5 kg - **Lifespan:** 25-40 years - **Speed:** 0.5 km/h - **Swim Speed:** 8 km/h - **Clutch Size:** 4-18 - **Incubation:** 60-90 days - **Maximum Depth:** 3 m ## Diet & Feeding A true gourmet, terrapins feast on various coastal creatures like snails, crabs, and clams. - **Primary Foods:** periwinkle snails, fiddler crabs, ribbed mussels, hard clams, small fish, marine worms - **Foraging Method:** Foraging ## Ecological connections - **Eats:** [Raccoon](https://www.snappit.app/explore/raccoon) (*Procyon lotor*) — Preys on terrapin eggs and hatchlings. - **Eaten by:** Fiddler Crab (*Uca pugnax*) — A primary food source for adult terrapins. - **Eats:** [Great Blue Heron](https://www.snappit.app/explore/great-blue-heron) (*Ardea herodias*) — Predates on young, smaller terrapin juveniles. - **Eaten by:** Hard Clam (*Mercenaria mercenaria*) — Crushed and consumed by terrapins with strong jaws. ## Traits - [Webbed Feet](https://www.snappit.app/explore/traits/webbed-feet): Characterized by having toes connected by a membrane, typically aiding in swimming. - [Colorful](https://www.snappit.app/explore/traits/colorful): Colorful describes organisms or objects displaying a wide range of bright and distinct colors. - [Thermoregulating](https://www.snappit.app/explore/traits/thermoregulating): Thermoregulating organisms maintain a stable internal body temperature despite fluctuations in the external environment. - [Ancient Lineage](https://www.snappit.app/explore/traits/ancient-lineage): This trait signifies organisms belonging to a very old evolutionary group with ancestors dating back millions of years. - [Coastal](https://www.snappit.app/explore/traits/coastal): Coastal habitats are dynamic environments located along the interface between land and sea, influenced by tides, waves, and saltwater. - [Carnivorous](https://www.snappit.app/explore/traits/carnivorous): This trait identifies organisms whose diet consists entirely or primarily of animal tissue. - [Speedster](https://www.snappit.app/explore/traits/speedster): This trait identifies organisms that exhibit exceptional swiftness in movement for hunting, escape, or travel. - [Aquatic](https://www.snappit.app/explore/traits/aquatic): Aquatic habitats encompass environments where organisms live predominantly in water, including oceans, rivers, lakes, and wetlands. - [Nocturnal](https://www.snappit.app/explore/traits/nocturnal): Nocturnal animals are primarily active during the nighttime hours, typically resting or sleeping during the day. ## Collections - [Reptiles & Amphibians](https://www.snappit.app/explore/collections/reptiles-and-amphibians) ## Safety **Danger:** 2/5 · Low Look but don’t touch. Keep a safe distance and wash hands after exploring. ## Frequently Asked Questions ### How to identify Diamondback Terrapin? Compare shell shape, shell markings, head stripes and the shape of the feet. Wear, age and algae can hide shell patterns. Turtle Identifier: upload a photo and compare the visible details. ### How long is Diamondback Terrapin? 10-23 cm ### How much does Diamondback Terrapin weigh? 0.1-1.5 kg ### How long does Diamondback Terrapin live? 25-40 years ### How fast can Diamondback Terrapin move? 0.5 km/h ### What does Diamondback Terrapin eat? A true gourmet, terrapins feast on various coastal creatures like snails, crabs, and clams. ### How fast can Diamondback Terrapin swim? 8 km/h ### Where is Diamondback Terrapin usually found? Coastal marshes ## Where to spot - [Cedarmere-Clayton Estates](https://www.snappit.app/guides/places/cedarmere-clayton-estates) — New York, US · Historic District - [Coindre Hall Park](https://www.snappit.app/guides/places/coindre-hall-park) — New York, US · Park - [Four Corners](https://www.snappit.app/guides/places/four-corners) — New Jersey, US · Neighborhood - [Guilford Historic Town Center](https://www.snappit.app/guides/places/guilford-historic-town-center) — Connecticut, US · Historic District - [Secessionville Historic District](https://www.snappit.app/guides/places/secessionville-historic-district) — South Carolina, US · Historic District - [Wellfleet Bay Wildlife Sanctuary](https://www.snappit.app/guides/places/wellfleet-bay-wildlife-sanctuary) — Massachusetts, US · Nature Reserve [View all places to see Diamondback Terrapin](https://www.snappit.app/guides/where-to-see/diamondback-terrapin) ## More Reptiles - [Pond Slider](https://www.snappit.app/explore/pond-slider) (*Trachemys scripta*) - [Western Fence Lizard](https://www.snappit.app/explore/western-fence-lizard) (*Sceloporus occidentalis*) - [Common Five-lined Skink](https://www.snappit.app/explore/common-five-lined-skink) (*Plestiodon fasciatus*) - [Desert Spiny Lizard](https://www.snappit.app/explore/desert-spiny-lizard) (*Sceloporus magister*) --- Source: [Diamondback Terrapin: Facts & Places to See — Snappit](https://www.snappit.app/explore/diamondback-terrapin)