In this wonderful podcast, Walter Marti explores the lives and loves of the opisthobranchs. These animals are commonly known as sea slugs, and include nudibranchs and sea hares. Members of the Phylum Mollusca, Class Gastropoda, Order Opisthobranchia, these colorful and captivating creatures are characterized by a single gill behind the heart. Footage includes predation, reproduction and other interesting behavior vividly captured in digital video. To learn more about Walter Marti and his work, please visit DiveFilm.com's Filmmakers Page.