Artificial lighting has expanded rapidly with urban growth, and this light now extends daylight deep into natural habitats. In my view, excessive artificial light has a largely harmful impact on wildlife because it disrupts biological rhythms and alters whole ecosystems. Although lighting supports human safety, we should recognise that its ecological costs for wildlife are often underestimated.

The most serious impact of artificial light is the disturbance of the circadian rhythms that govern feeding, migration, and reproduction in many animals. Because these creatures rely on natural light cues, constant artificial lighting can confuse their orientation and timing. For instance, sea turtle hatchlings are drawn towards streetlights instead of the ocean, and this light-driven disorientation reduces their survival. Such pressure weakens animal populations and can shift predator and prey relationships within affected habitats.

Furthermore, artificial lighting degrades habitats by changing behaviour and increasing the exposure of wildlife to threats. Nocturnal animals may avoid lit areas and lose feeding grounds, while others become far more visible to predators. Although some argue that wildlife can adapt, adaptation often favours a few tolerant creatures, and this bias reduces the biodiversity of our ecosystems. Such imbalance simplifies habitats and makes them less resilient to change.

Overall, artificial lighting poses a significant challenge to wildlife by disrupting the natural cycles and habitats that animals depend upon. Therefore, we should limit unnecessary light and adopt wildlife-sensitive lighting designs that reduce harm without sacrificing human needs. Such a balanced approach is essential if we want to protect the ecosystems and creatures around us.