Thousands of large predators are once again thriving in the rivers of Malaysia's Sarawak state on Borneo. Recent surveys indicate that the saltwater crocodile (Crocodylus porosus) population has surged to over 25,000 individuals, nearly double the number reported a decade ago.
As recently as the 1980s, these crocodiles were pushed to the brink of extinction due to uncontrolled hunting and the trade in their skins.
This remarkable recovery can be attributed to several contributing factors. Local indigenous communities traditionally avoided hunting crocodiles due to cultural taboos, and a wildlife protection law was enacted in 1990.
Government agencies subsequently implemented regular monitoring programs, which helped the population begin to grow. Today, crocodiles inhabit over 4,500 kilometers of river systems across forty major basins within the state.
However, the success of these conservation efforts has brought forth new challenges. As the crocodile population has expanded, human-reptile encounters have become more frequent. In response, authorities are now issuing licenses for culling in dangerous areas and have launched a mobile application for prompt reporting of sightings, though paradoxically, the number of fatal attacks has actually decreased compared to two decades ago, according to the forest corporation.
The situation in Sarawak perfectly illustrates a classic paradox of successful conservation: when a species makes a comeback, humans must re-learn how to coexist with it. While riverine ecosystems regain their former complexity, maintaining this balance demands continuous attention and adaptable management strategies.
The state's experience demonstrates that predator protection is effective when combined with respect for local traditions and modern monitoring tools. Crucially, the aim is to prevent a return to the old mistakes of over-exploitation.
