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Article Summary 3 In Hochscheid, Bentivegna, and Speakman’s article, Regional Blood Flow in Sea Turtles: Implications for Heat Exchange in an Aquatic Ectoderm, they study the ways reptiles regulate their internal temperature through heat exchange. Reptiles must keep their body temperature in a certain range to remain active. Most reptiles do this through a process called sun bathing during which they use solar energy to raise their body temperature. However, aquatic reptiles such as sea turtles spend the majority of their life in the water where sun bathing is ineffective. Due to this fact they rely on other mechanisms to release and conserve heat. The experiment investigates this mechanism. The researchers hypothesized that heat exchange took place along the surface of the front flippers by means of the circulatory system.