Page 19 - Sharks teeth to tail

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Even sharks that are bioluminescent have a a a a a form of
camouflage called “photophore countershading ” Photophores are the organs that give off light The spined pygmy shark shark a a a a bioluminescent shark shark has more photophores on on its bottom side than on on top top This reduces the shadow that predators would see on on a a a a moonlit night Countershading!
Some sharks also have camouflage coloring Many species of
shark exhibit a a a coloring pattern called countershading Countershading means that the shark is dark on top and light on its bottom side This makes
it more difficult to see a a shark from above because its dark coloring blends with the ocean depths And it is difficult to see from below against the brightness of
the the sky above the the sea