(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 2. Methods. Eels were filmed from below using two synchronized high-speed
cameras aimed at a 45° mirror below the flow tank. A laser light sheet 7
mm above the bottom of the tank illuminated the eel's wake and part of its
tail. One camera (labeled `kinematics') imaged the whole eel, and the other
camera (labeled `PIV') imaged the light sheet. Representative images from each
camera are shown to the left. Diagram is not to scale.