One of the 41 turtles and tortoises on WAnimals
Reptiles · Testudines · Emydidae
Graptemys geographica
The species is abundant and widely distributed; it faces no significant short-term risk.
The northern map turtle owes its name to the pattern of fine pale lines on its shell, reminiscent of the contour lines of a map. It shows one of the most extreme cases of sexual dimorphism among turtles: the females are far larger than the males and have a disproportionately large head, adapted to crushing molluscs.
Weight
500 g – 2.5 kg
Size
10 cm – 27 cm
Life expectancy
30 years
Diet
Omnivore
Combines animal and plant food depending on availability.
Activity
Diurnal
Active mainly during the day.
Social structure
Solitary
Lives and hunts alone, joining others only to breed.
Sighting difficulty
Easy
Sources consulted: https://www.iucnredlist.org/ | https://animaldiversity.org/ | https://es.wikipedia.org/
Best time: From April to September in rivers and lakes of eastern North America, when it basks in groups on floating logs.
The pins mark the parks and dive sites where its presence is documented.
Parks and dive sites where this species has been documented — showing 14 of 16.
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