'(<a href="http://www.j-archive.com/media/2011-04-25_J_17.wmv">Sarah of the Clue Crew reads from the Maui Ocean Center.</a>)  To be hard to see from both above and below, many sharks have dark backs and paler bellies; this was named "counter-shading" by Abbot Thayer, an artist who helped the military develop this during World War I'
camouflage
PACIFIC OCEAN LIFE: To be hard to see from both above and below, many sharks have dark backs and paler bellies; this was named counter-shading by Abbot Thayer, an artist who helped the military develop this during World War I
To be hard to see from both above and below, many sharks have dark backs and paler bellies; this was named "counter-shading" by Abbot Thayer, an artist who helped the military develop this during World War I
To be hard to see from both above and below, many sharks have dark backs and paler bellies; this was named "counter-shading" by Abbot Thayer, an artist who helped the military develop this during World War I
PACIFIC OCEAN LIFE
camouflage
PACIFIC OCEAN LIFE