Orangutans are, in fact apes, get it right. They are also omnivores. They eat mostly plants, but they also eat some insects and birds. Orangutans keep the insect and plant population under control by, of course, eating them. There are orangutans in Indonesia that roam free. There were probably alot that died because of the tsunami. The trees the apes live in were knocked down, partialy destroying their habitatand some of the food that they eat. The bugs they ate died and the birds they ate flew away leaving them with little food resources. The water was poisonous because of the salinity so they couldn't drink it. Once the bugs started coming back there might not have been enough orangutans to eat them, so there might be too many bugs. The plants the orangutans eat probably died because of the poisonous water they took in. Also, plants aren't very strong, so they were probably carried away pretty easily. Orangutans and other animals, though, sensed that there was trouble coming their way so many fled to higher ground. There weren't as many animals found dead after the tsunami as you might think there is. This kind of is just an asumption to as what might of happened because people didn't really do research on how the orangutans were affected.