Difference in Activity Corresponding to Changing Water Temperature among Juvenile Green Sea Turtles

Abstract

In this study, a tank experiment was conducted to investigate the change in the activity level of juvenile green turtles reared for three months when exposed to water at a range of temperatures (13 to 25 ℃). The results of the experiment show that the activity level of juvenile green turtles declined with lower water temperature. Moreover, in cold waters at temperatures of 13-15 ℃, unusual swimming activity was observed. For example, the frequency of stroking was not constant, or the timing of stroking with both flippers did not coincide. These results indicate that staying in cold waters for a long period would be critical for juvenile green turtles.