The stuff is tremendously nutritious. There's a theory named the "kelp highway hypothesis," which describes how the first people to make it to America might ha

The stuff is tremendously nutritious. There's a theory named the "kelp highway hypothesis," which describes how the first people to make it to America might have taken a coastal route (instead an inland route via the land bridge). By following the massive coastal kelp beds, these hunter gatherers would have been able to sustain themselves with kelp itself when no other food was available. https://en.wikipedia.org/wiki/Coastal_migration_(Americas)#Kelp_highway_hypothesis https://en.wikipedia.org/wiki/Coastal_migration_(Americas)#K...