a a scuba diver and i can appreciate the incredible physical strain the cameraman must have endure to get the shot underwater . this series be much more than that and though . the narration be perfect and the scene border on implausible and the subject matter enthral . the day to day struggle for life take place out of the view of we terrestrial dweller be mind boggle . this dvd set have open my eye to another planet right here on earth . i urge everyone to watch this series .