Part 1: the biodiversity of Sulawesi

Sulawesi is an island in Indonesia. It is the 11th largest island in the world.

Sulawesi – which used to be called Celebes – is a strange island. It is shaped like a funny-looking lower-case “k”.

Sulawesi was formed when different tectonic plates collided. It has never been connected to another major land mass.

Because of this history, Sulawesi’s plant and animal life is distinct from other parts of Indonesia.

A spectral tarsier. Photographer: Rhett A. Butler

Sulawesi has many endemic species – plants and animals found nowhere else.

Knobbed hornbills. Photographer: Rhett A. Butler

Among the most famous of these species is the babirusa, which is also called the pig-deer.

Another interesting animal is the maleo, a ground bird that builds large mounded nests that are warmed by the sun or by heat produced by volcanoes.

Photographer: Rhett A. Butler

The crested black macaque is Sulawesi’s most threatened primate. It lives in large groups and spends a lot of time on the ground.

Photographer: Rhett A. Butler

The smallest primate in Sulawesi is the tarsier, one of the few primates that eats only insects.

Photographer: Rhett A. Butler

Sulawesi has two species of wild cattle: the lowland anoa and the mountain anoa.

Overall more than 60% of Sulawesi’s land mammals are found nowhere else.

Crested black macaque. Photographer: Rhett A. Butler

Sulawesi also has rich marine ecosystems, including some of the most biodiverse coral reefs in the world.

A starfish on a reef. Photographer: Rhett A. Butler

Text and photos by Rhett A. Butler

Look out for part 2 to learn more about Sulawesi!