Green Sea Turtle in South Dakota: what to know before you start looking

1. Where have green sea turtles been found in South Dakota?

Green sea turtles are not native to South Dakota, but a handful of stray individuals have been reported in the Missouri River, most often near the Nebraska border. Sightings typically occur after summer floods that carry turtles upstream from the Gulf of Mexico. Check riverbanks and sandbars, especially near Pickstown or Yankton. For a broader look at sea turtle sightings, visit thegreen sea turtle habitat overview.

2. When is the best time to try to spot a green sea turtle in South Dakota?

The highest odds are between June and August, after the Missouri River has risen from spring snowmelt or heavy rain. Warmer water temperatures help stray turtles survive the experience. Most sightings occur in late July or early August. Staying near the Missouri National Recreation River offers the best chance. CheckSouth Dakota wildlife spotting tipsfor seasonal patterns.

3. How can you tell a green sea turtle from other turtles in South Dakota?

Green sea turtles have large, paddle-like front flippers with no visible claws, unlike snapping turtles or painted turtles which have webbed feet with claws. Their shell is smooth and heart-shaped, not keeled like a snapping turtle. The head is small and beak-like. Beginners can start by checking for flippers instead of feet a simple clue that rules out most native species.

See ourGreen Sea Turtle trunkfor the next step.

4. What should you do if you think you see a green sea turtle in South Dakota?

Do not handle the turtle it may be stressed or injured. Take a clear photo from a safe distance, note the location and time, and report it to South Dakota Game, Fish and Parks or a local wildlife rehabilitation center. Because these animals are so rare, any confirmed sighting provides valuable data. Also checkgreen sea turtle conservation strategiesfor more on how to help.

See ourtour planning ideasfor the next step.

5. How do green sea turtles end up in a landlocked state like South Dakota?

Juvenile and occasionally adult green sea turtles can be swept far inland by strong currents, especially during flood events on the Mississippi and Missouri river systems. They can survive in freshwater for weeks but eventually need saltwater. Many are found exhausted and emaciated. The phenomenon is accidental, not a migration pattern.

6. What are the physical characteristics of a green sea turtle?

Adults have a carapace length of 3 to 4 feet and weigh 250 to 400 pounds. The shell is brownish with radiating wavy lines, and the plastron (belly) is yellowish. Their skin is olive or dark brown. Unlike river turtles, they cannot retract their head into the shell. A key field mark is the single pair of prefrontal scales between the eyes.

7. What other wildlife might you see while looking for green sea turtles in South Dakota?

Along the Missouri River you are more likely to see bald eagles, herons, and foxes. These species share riparian habitats. If you spot a large turtle in the water, first check for the characteristic turtle shape and behavior. For a complete guide to South Dakota wildlife, visit ourstate wildlife page.

8. Show your support for sea turtle conservation

After learning about green sea turtles in South Dakota, you can help protect them with ocean-focused gear. Each purchase supports conservation efforts. Compare ourwildlife-themed appareland accessories.

Alaska Wildlife Magnets

This ceramic tile magnet features a sea turtle design and gives back to ocean conservation. A small way to keep the turtle in mind.

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Sea Turtle Embroidered Leather Baseball Cap

A high-quality trucker cap with an embroidered sea turtle. A portion of proceeds supports ocean conservation.

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Cute Animals Compilation Pack Sticker Turtle Sticker

Waterproof vinyl sticker to decorate water bottles or laptops. A portion supports ocean conservation.

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9. Frequently Asked Questions about green sea turtles in South Dakota

**Are green sea turtles ever found in South Dakota?** Yes, but only rarely as accidental strays in the Missouri River, usually after floods.

**How can I identify a green sea turtle?** Look for large flippers with no claws, a heart-shaped shell, and a small beak. Use thegreen sea turtle identification guidefor more details.

**What should I do if I find one?** Keep your distance, photograph it, and report to local wildlife authorities.

**Can green sea turtles survive in freshwater?** They can for weeks, but they need saltwater to thrive. Most found inland require rescue.

**When is the best season to look?** Summer, especially July and August, after river flooding.