laura kyle recently visited maysia and has this report. >> reporter: it's one of nature marvels. thousandof fireflies liging up the trees on the banks o the kuala selangor river. he's been caying urists up and down these waters for6 years. typical night on the weekend might have up to 800eople from arou the world coming to see the magical illumination that are cread when themale and fele insects communicate. but the fireflies are dying. >> translator:'ve been seeing changes in the fireflies. there a differenceow because the destruction of the forest. >> reporter: pushed through the thinine of trees on the edge of the river and youfind this, the destruction of a habitat. treecrucial to the insects' short three-month fe cye lled. the fireflies may b one malaysia's prime trist atactions, yet the government did nothing totop is. the destructn of vas swas of natur habat to make way for oil palm plantatio. theevelopers dideave a thin stri of vegetation running along e river but it's not enough to support the firly population. some experts believe it will have gone by t end of this ye.