Yes, the people we call *Native Americans* and who used to be called *Indians* actually came from SE Asia, likely Indochina (Vietnam, Laos, Cambodia).
The interesting thing about the Pacific and this colder denser water, it can hold more oxygen and nutrients and must be vital to fish and other sea life. So warming of the oceans disrupts the entire marine life cycle and eventually us also. We're disrupting the entire planetary life cycle which will lead to a global mass extinction. Humans won't go extinct but there will certainly be more famine, starvation, etc.