Ever since earth was formed, land and sea have battled to claim the coastline. Segments cover this epic struggle—plus the habitats and adaptations of several marine species. DVD extras include a video index, curriculum units with pre- and postviewing questions in a format ideal for integration into classroom instruction, a link to National Science Education Standards, teacher resources, and a teacher's guide. Five-DVD boxed set. Close-captioned. 275 minutes. 2005.