Tortoises need to bask in their backs. Although this animal spends most of its time in the water, it also needs to bask in the sun, and proper illumination is beneficial to its growth. It should be noted that the time of drying the back should not be too long, otherwise it will dehydrate and even endanger life. Sun for up to half an hour a day, and it is best to provide water nearby, so as not to leave the water for too long. If you don't bask in the sun for a long time, it will often affect the absorption of calcium and lead to soft nail disease.

1. Raising the temperature: The first advantage of basking in the back is to raise the temperature. As a temperature-changing animal, the activity of tortoise is often closely related to the temperature. If the temperature is relatively low, the tortoise is not very active. On the contrary, after the temperature rises, its metabolism will accelerate, and it will love activities more.

2. Eliminate bacteria: Because sunlight contains ultraviolet rays, it still has a good killing effect on some bacteria, especially for turtles soaked in water for a long time, it is easy to have various fungi on their backs, which can be completely eliminated by basking in the sun, thus preventing various diseases.

3. Promote calcium absorption: Sun exposure can also promote calcium absorption. Although sun exposure can not supplement calcium, it can promote the synthesis of vitamin D3, which is of great help to calcium absorption, bone growth and soft nail disease.