Archaeology - Overview Underwater archaeology is an interesting subject. A shipwreck is often a time capsule, preserving life as it was at the exact moment the ship went down. A moment in time. Life on terra ferma changes.
New buildings stand on the foundations of old structures, roads are built and times change.
Man has definitely changed and much of the old has been replaced by new. Access underwater over the centuries has been restricted. Locating sites can be difficult and dive time is limited. Preserved from man but nature takes it's toll. Salt water, marine creatures, tides, storms and earthquakes all cause damage.