While walking along the Anhinga Trail at Everglades National Park there were many cooter turtles (Pseudemys sp., Emydidae) basking on the rocks along the waterways. Some were doing so in a rather amusing fashion:
In these waters there were both Florida cooters (Pseudemys concinna floridana, Emydidae) as well as Florida red-bellied cooters (Pseudemys nelsoni, Emydidae). These relatively large river turtles are fond of spending most of their days soaking up the sun. They do so to regulate their temperature, and the ultraviolet rays may play a role in vitamin D synthesis and calcium metabolism.
While many of these turtles are farmed for the pet trade, the individuals in this national park are protected from collection. The effort to preserve these remaining natural areas is a large part of what make national parks so alluring to me.