The migration from Siberia to North America may not have occurred via an ice/land bridge. What is the name of the theory proposing that the settlers followed a coastal sea route, utilizing the coasts and islands along their journey?
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The theory you're referring to is often known as the "kelp highway hypothesis." This hypothesis proposes that the first humans to migrate from Siberia to North America might have traveled along a coastal route using a network of ice-free corridors, including shorelines and islands rich in marine resources. The kelp highway hypothesis suggests that these early settlers followed a maritime route, taking advantage of the productivity and abundance of marine life along the coasts during the Last Glacial Maximum when sea levels were lower, and additional land was exposed. This theory challenges the traditional notion of a solely ice/land bridge migration route, such as the Bering Land Bridge, and suggests a more complex and varied path along coastlines.