Sulawesi is one of the most biologically distinctive islands in the world.

Its long isolation as an island — it has never been connected to the Asian or Australian continental shelves — has produced a fauna and flora with high rates of endemism: species found nowhere else on Earth.

The babirusa — the strange deer-pig whose males grow tusks that curve back and nearly pierce their own skulls — is endemic to Sulawesi.

The anoa — two species of small buffalo that evolved on the island — is endemic.

The Sulawesi warty pig, depicted in what may be the world’s oldest cave painting, is endemic.