This episode is dedicated to colonization and life on volcanic islands, and life that have developed because of reef barriers.

Originally released by WorldWideMedia Organization, 2011. Streaming video file encoded with permission for digital streaming by Infobase on May 08, 2015.

Galapagos (8:44); --Great Barrier Reef (5:50); -- Komodo (2:12); -- Iguana of Galapagos (4:16); -- Evolutionary Development (3:15); -- Nocturnal Hunt (4:58); -- Giants (8:50); -- Marine Iguanas (5:31); -- Safe Dwellings (8:32); .