Normal Sea Level?
Dan Britt – Takes A Scientific Look At Climate Change
This YouTube video explains is an entertaining way how over the past 500 million years the climate has changed. These changes are recorded in the rocks on earth, and from the past 800,000 years in the ice cores and sea bed samples.
This is well worth an hour of anyone’s time.
Normal Sea Level
If “normal sea level” is what has occurred over most of the past 500 million years then currently our sea levels are much lower than normal!