Dadohae National Park is the 14th National Park, designated in December 23, 1981. With the total area of 2,321.512㎢, it is the largest National Park in South Korea. The park consists of 1,596 islands of Sinan-gun, Jindo-gun, Wando-gun and Yeosu city. In Sinan-gun are 140 inhabited and uninhabited islands, etc. Out of Sinan's fourteen Eup & Myun, parts of Heuksan-myeon, Bigeum-myeon, Docho-myeon and Haeui-myeon are part of Dadohae National Park. The total area is 525.842㎢, and the seawater area among it is 459.106㎢.
Many bizarre rocks including those of Hong-do, magnificent beach, thick pine forest are all in harmony and create an extraordinary view.
Diverse wild flowers including skullcap plant, henbit, and 209 species of birds such as black-tailed gull, falcon, inhabit the area, according to the 2007 Report by Korean National Park Service.
European Robin (Erithacus rubecula) discovered in Hong-do was never seen before in Korea. It is often observed in Great Britain, Western Europe and Northern African region but it was spotted for the first time in Korea in Hong-do in March 2006. Its features include approximately 14-centimeter body length, orange forehead, breast and jaw, and olive-shade brown upperparts. The reasons for its appearance in Hong-do, a place far away from its original habitat, can be attributed to expansion of habitats due to global warming, or a temporary phenomenon due to strong wind; further research is needed.
The unrecorded species that has been discovered in Hong-do since 2003 are 8 species: European Robin (Erithacus rubecula), White-capped Water Redstart (Chaimarrornis leucocephalus), Spotted Munia (Lonchura punctulata), Eastern Grass Owl (Tyto longimembris), Acrocephalus Agricola, Zoothera citrine (no picture), Lanius collurio. (Clockwise order)