Species at risk
It is home to lesser-known marvels, like the proboscis monkey, sun bear, clouded leopard and flying fox bat.
But these magnificent creatures are disappearing as their forest homes are rapidly being cut down to make way for oil palm plantations or destroyed by commercial or illegal logging.
Rampant poaching also poses a grave threat to the island's endangered species - tigers are hunted for their skins, rhinos are killed for their horns, and orangutans are taken from the wild for the entertainment and tourism trade.
Conservation in action
From saving the Sumatran tiger - the most endangered subspecies of tigers - to conserving the habitat of the Sumatran elephant in the island's central Riau province - an area with one of the fastest rates of deforestation in Indonesia - WWF is working with local partners on Sumatra to protect the island's remaining forests and habitats.
Thanks to the success of a number of ongoing conservation projects and initiatives in Sumatra, WWF has a number of notable accomplishments, including:
- Brokering the first-ever, island-wide commitment to protect Sumatra’s natural forests
- Partnering with the Indonesian government to establish Tesso Nilo National Park to protect critical elephant and tiger habitat. WWF’s continued research and advocacy resulted in the government doubling the size of the national park in 2008.
Smile, you're on candid camera!
One of the most effective ways of doing this is with camera traps. Triggered by temperature-sensitive sensors, infrared camera traps snap photos as tigers pass by. The results provide invaluable information about the species and its habitat, and are used to ensure that they are effectively protected.