How much of the ocean is not owned?

In the vast expanse of the ocean, which covers over 70% of our planet's surface, a significant portion remains unclaimed and unowned. This begs the question: how much of the ocean is not owned? As international waters, the high seas extend beyond the territorial boundaries of any one country, leaving vast regions without a clear owner. The complexity of ownership in the ocean is further exacerbated by overlapping jurisdictional claims and the absence of a single governing authority. So, as we delve deeper into the mysteries of the ocean, we must ask: how much of this blue planet's vast liquid domain truly belongs to no one?