How to identify it
Keeled grey-to-black carapace with deep concentric growth rings; plastron unhinged, yellowish to greenish with dark flecks. [1][2]
Grey head and neck with conspicuous black spots; consistently white upper lip. [1][2]
Carapace 10-14 cm in males, 15-24 cm in females. [1][2]
Unlike snapping turtles it lacks a long saw-toothed tail; unlike mud turtles it has no hinged plastron; unlike wood turtle no orange on neck and limbs. [1][2]
Compared with the common snapping turtle: Terrapin has black-spotted head and neck and lacks a long saw-toothed tail. [1][2]
Compared with the eastern mud turtle: Mud turtles have a hinged plastron; terrapins do not. [1][2]
Compared with the wood turtle: Wood turtle has orange on the neck and limbs; terrapin does not. [1][2]
Species it is confused with
Check these before deciding what you are looking at. If you are not certain what it is, do not shoot.
- Common snapping turtle · Chelydra serpentina
- Eastern mud turtle · Kinosternon subrubrum
Where it lives
Coastal marshes, tidal flats, coves, estuaries and lagoons behind barrier beaches; brackish water, intolerant of long-term fresh or full-strength salt water. [1][2]
Limited legal take
Legal take of this species exists only under narrow conditions — a quota, a draw, a permit, a small area, or animals released or held on private land — set by the authorities below. Nowhere else is a legal opportunity implied, and Hunt shows one only where a certified rule establishes it.
Where legal take is listed
- Florida — reptile take · Rule 68A-25.002 General Provisions for Taking, Possession and Sale of Reptiles (F.A.C.; history to 7-9-26)
- Louisiana — reptile take · Recreational Reptile and Amphibian Collecting Regulations
- Mississippi — reptile take · Title 40 Part 5 Rule 2.3 Regulations Regarding Non-Game Wildlife in Need of Management (MDWFP PDF; file dated 2024-04)
- South Carolina — reptile take · SCDNR Chapter 123 Reptile and Amphibian Regulations (123-151)
Being listed is not an open season. Seasons, zones, licences, methods and limits decide whether this animal may be taken on a given day and place — check Hunt or the authority before you go. Listings read 2026-09-30.
Where it is found
Atlantic and Gulf coasts from Cape Cod to Texas.
Sources
Every claim above is attributed to one of these published sources.
- BIOLOGICALNatureServe Explorer taxon record
NatureServe · reviewed 2026-09-30
NatureServe
- BIOLOGICALAnimal Diversity Web species account
University of Michigan Museum of Zoology · reviewed 2026-09-30
University of Michigan Museum of Zoology