Kuala Selangor is a small coastal village northwest of Kuala Lumpur. There are still fireflies to be seen.
Visitors can go to Kampung Kuantan and Kampung Bukit Belimbing in the district of Kuala Selangor. The mangrove trees grow along the riverbanks of Kuala Selangor river. These are the trees where the fireflies or “kelip kelip” in the local language stay and feed on its leaves. During the day, they retreat to the grasses near the mangrove trees.
When night falls, the fireflies will feed on the nectar of the leaves and attract mates with their synchronised flashing green light. The thorax of the insect produces a green grow that flashes at a frequency of 1/3 Hz, or 3 flashes in one second.