Climate change has been happening about 3.5 billion years. Current geological rise in the oceans has been going on for the last 20,000 years since the end of the last glaciation. There was dramatic increase for about 10-12 thousand years then it slowed. The rise has been slow but steady for about 8,000 years and has not increased significantly in recent times. Do a search for sunken cities.
February 16, 2022