depending on situation, but not that hard.

- Malaysia is not a large country. a few days travel (walking) is enough to access agricultural land where you can grow stuff.
- depending on how many people then, you can live on island. if zombie want to walk underwater (since they are dead and no longer have to breathe) the sharks can finish them off.
- its warm climate mostly with monsoon season. so we won't have food problem.
- etc etc etc.
- but i don't think it would be a great deal. an ustaz chanting stuff for a few minutes and the zombie outbreak will end instantly, just like the ending of local ghost movies

other fish will eat it. unlike human, cannibalism is legal among fishes.

you can't grow stuff. getting non-salty water is hard. Island like I've said previously. We have quite a lot of them.