Watch Shark Attack 3: Megalodon (2002) HD Full Movie Free on SolarMovie. Watch Shark Attack 3: Megalodon (2002) online free. When two researchers discover a colossal shark's tooth off the Mexican coast, their worst fears surf...When two researchers discover a colossal shark's tooth off the Mexican coast, their worst fears surface: the most menacing beast to ever rule the waters is still alive and mercilessly feeding on anything that crosses its path.