| NOAA scientists Christine Addison
(foreground) and Paula Whitfield (in back holding
the underwater video camera) decompress after one
of their lionfish research dives. Notice the diving
chart and stopwatch that Christine has strapped to
her left arm. She uses them to properly time the
diving team’s ascent to the surface. If they
rise to the surface too quickly, they risk getting
decompression sickness. (Photo credit: Doug Kesling) |