Watch 3-Headed Shark Attack (2015) HD Full Movie Free on SolarMovie. Watch 3-Headed Shark Attack (2015) online free. As a mutated, three-headed, great white shark eats its way from one end of the ship to the next, the...As a mutated, three-headed, great white shark eats its way from one end of the ship to the next, the passengers have to fight the deadly predator using anything they can find.