Although the island has an area of only 2.85 square kilometers and a coastline of only ten kilometers, it boasts an extremely diverse natural ecology. The sulfurous emissions and hot springs nurture plankton which provides food for species at the bottom of the food chain. Directly or indirectly, the undersea springs provide nourishment for the many marine species and the more than 300 species of flora and fauna on the island itself.
雖然龜山島面積僅 2.85 平方公里，環島海岸線約長 10 公里，但擁有的自然生態非常多樣，「磺煙與海底湧上泉」產生的浮游物作為食物鏈最底層的養分，直接或間接滋養了海域物種、龜山島上的 300 多種動植物，以及特有新種「硫磺怪方蟹」。