The juvenile white shark tag recorded temperature, depth, and light-levels every five seconds during the 90 days that it was deployed on the shark resulting in more than 4.5 million data points. Here’s a plot of the depth and temperature over the tracking period. Although the shark started out in the cool waters off Monterey, he quickly moved into warmer water. As the surface waters warmed, the shark made deeper dives, but never deep enough to where temperatures were below 47 ° F (~ 8°C). It’s interesting to note that the shark’s maximum depth seemed to be dictated largely by the layer of water at which the temperature decreased rapidly with depth (called the thermocline). The shark eventually found some very warm surface water around 75° F (~ 24°C) before returning to slight cooler temperatures around 70° F (~ 21°C). We should have the track up soon so stay tuned!