Blue Submarine No 6 Complete Collection

"This hard hitting release from the sci-fi anime series Blue Submarine No. 6 includes all four OVA episodes of the show, following the story of a future Earth in which the polar ice caps are melted and a race of creatures native to the ocean have set their sites on controlling the planet, leaving the crew of a submarine with plans to stop the mutant army as the last bastion of hope for man kind."