As megalodon shark has got extinct, there is no real time picture of this enormous shark. Only by studying it fossil remains mainly teeth scientists have made some sketch of the largest shark of world who ever lived, while some scientists believe that megalodon is merely a bulkier version of great white shark of today but many do not agree with this theory.
Here are some pictures of megalodon which are just rough sketch and do not truly represent megalodon
Megalodon shark rebuilt in color
Megalodon head and jaws structure rebuilt
Graphical megalodon picture in movement