Madagascar was originally settled by people from Indonesia over a thousand years ago. That's why everyone there speaks a Polynesian-origin language and looks Blasian. They think their ancestors might have been a single refugee boat that got knocked off course and crossed the entire Indian Ocean for 6 months or more. Imagine leaving your home, drifting through the ocean for 5,000 miles, and then ending up adjacent to a completely different continent where you start a new life with all sorts of animals and plants that you've never seen before.
Or look at Easter Island. It's a tiny island just 14 miles long and 7 miles wide, way out in the middle of the Pacific Ocean. Most remote inhabited island in the world, there isn't another inhabited island for over 1,200 miles in any direction. That shyt was settled over 800 years ago....can you imagine traveling for thousands of miles across the Pacific Ocean to land on this tiny-ass place in the middle of nowhere, the only animals are fish and seabirds, and you decide to stay there and raise your people for hundreds of years?