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The animated GIF adds a red arrow cursor to the above plot showing the location and approximate heading at the time shown at in the bottom of the plot. Depending on the time range plotted, up to 48 frames will be shown in the animation. Note that the frame rate is not fixed - the time per frame may be observed in the time stamps. Data gaps also affect the apparent speed of the cursor.
Oceans 2.0 API filter: extension=gif
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KML files are a data file that works primarily with Google Earth. The file contains some metadata information and uses the "gx" object to plot the track with a time slider so that users can interrogate the position of the device / drifter over time. The drifter's position is labelled with it's device name and marked with a blue arrow, showing the drifters heading as users slide the time or use the playback function in the time slider. Start and End points are also shown. Clicking on the track, start or end pointson the map or in the places tree (on the left side) brings up a small text box that shows the precise times, the track will also show if it is clean or raw data and a daily file or not. Here is a screenshot of Google Earth on the desktop:
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