Hundreds of whales filmed approximately 100 miles off the coast of Louisiana . Dramatic were filmed by a worker on an oil platform 70 feet above the shore . Experts say the predators were migrating north and creating shoals of fish .
Hundreds of sharks filmed feeding 30 miles off the coast of Louisiana . Dramatic footage taken by a worker on an oil platform 70ft above the sea . Experts say the predators were migrating north and following shoals of fish .