View full lesson: http://ed.ted.com/lessons/how-much-of-human-history-is-on-the-bottom-of-the-ocean-peter-campbell

Sunken relics, ghostly shipwrecks, and lost cities aren’t just wonders found in fictional adventures. Beneath the ocean’s surface, there are ruins where people once roamed and shipwrecks loaded with artifacts from another time. Peter Campbell takes us into the huge underwater museum that is our ocean to see what these artifacts can tell us about humanity.

Lesson by Peter Campbell, animation by Blind Pig.