Cham Island topography is mostly mountainous, without river, except for the biggest island of Hon Lao where there are some rocky fresh water streams with natural forests. The highest point is at 517 meter on the top of Hon Lao, other islands peaks are lower with elevations from 70 to 200 meter.
There are 135 species in 35 genera of corals found around Cu Lao Cham. The clear green water and colorful coral reefs provide the wonderful undersea world to dive. And the untouched white sandy beaches and captivating highlights evocatively named Bai ong, Bai Bim, Bai Chong, Bai Bac, Suoi Tinh, Suoi Ong, Cau Mo where tourists can relax, go hunting and fishing octopuses. It is not complete if you coming to Cham Island without trying delicious seafood such as octopuses, lobsters, abalone, kaki, hind, cholonia's eggs, bird's nests).