As the sun sets over Kuantan's mangroves, the river transforms into something magical. Board a small boat at dusk and glide quietly into the heart of the estuary, where thousands of fireflies turn the riverbank trees into shimmering natural lanterns — a synchronised light show found in only a handful of places on Earth. Along the way, your guide sweeps the water's edge with a torch, scanning for the telltale eye-shine of estuarine crocodiles resting in the shallows. Listen for night herons calling from the canopy, watch fruit bats cross the moonlit sky, and breathe in the cool, salt-tinged air of the mangroves after dark. A short, unforgettable cruise that reveals a side of Kuantan most travellers never see — the river at night, alive with light and quiet wonder.