The island is there.

The ancient remains are there.

The conclusion — that people had the capability to cross the water to reach the island and to sustain themselves on it — follows necessarily.

This logical inference adds to the broader picture of early coastal maritime capability that the Shuká Káa discovery contributes to.

Not only was he eating primarily marine protein — an active choice to exploit marine resources rather than terrestrial ones — but his very presence on an island confirms that he and his community had the technology to live a genuinely island-based maritime existence.

The implications for the coastal migration hypothesis are significant.