Kuala Selangor Fireflies Park is a unique natural attraction located along the Selangor River, known for its spectacular colonies of fireflies. The area is part of a mangrove and riverine ecosystem rich in biodiversity. The riverbanks are dominated by Berembang trees (Sonneratia caseolaris), which provide food and habitat for thousands of fireflies that gather and flash in synchrony at night. The mangrove ecosystem also supports many other species such as fish, crabs, mudskippers, insects, and various birds. Mangrove roots provide shelter and breeding grounds for aquatic life, while the trees serve as nesting and feeding areas for wildlife. This interconnected ecosystem plays an important role in maintaining biodiversity and protecting the river environment, making the conservation of the fireflies’ habitat essential.