Ghosts of the Pacific.

As they sail into the hot, hazy world of the Pacific, Alfred and his dog and seagull crew encounter the ruthless killing practices of shrimp trawlers and an island of plastic the size of Texas. Along the way, Alfred, Hollie and Seaweed befriend the crew of an environmental protection ship, who help to inspire him to take on a new goal: to protect the oceans of the world.