All turtles generally need to bask in the sunshine or under a UV light-bulb every day, at least for a few hours. Turtles need to bask because they need: UV-A light for their metabolism, mood regulation as well as for breeding. UV-B light in order to produce vitamin D3, which helps with their bones and other organs.
How long should Terrapins bask?
Turtles generally bask between 2 to 8 hours each day. Most turtles such as map turtles and sliders follow this basking routine, and isn't an issue as far as the turtle returns to the water each day and stays there for significant amounts of time.
How can you tell if a terrapin is happy?
Digging. Turtles are natural foragers and a common behavior is digging. If you see your turtle digging at the gravel at the bottom of their tank, this is a sign of a happy turtle. They should also regularly explore their environment, which can mean swimming around decorations and plants.