In the hope that the current nationwide campaign for nature conservation will be carried out successfully, the Ministry of Communications has selected ten kinds of animals and plants (five each of flora and fauna), that are nearing extinction to be depicted in Postage Stamps that are being issued this year. The purpose of these Stamps is to publicize the need for preserving these rare species. The following two Stamps are the seventh and eighth stamps of this series, the 4th Issue:
1. Maeng-ggong-I (Rain Frog).
About 200 species in the World in the family, Micro-hylidae, which includes rain frogs. Rain frogs inhabit mostly the tropical region, including Central America, Africa, and Southern Asia. There is only one species in Korea. The rain frog is generally small in size and has a head as wide as its body. The dorsal side of the body is blueish yellow. They usually hide in the rank weeds on the border of rice paddies or ponds and lay eggs during the rainy season of early June. At this time we can enjoy their loud rhythmical croaking, a lamenting song of nature.