Xenolith
Graniti which was the basement rock of Jeju was captured by basalt due to volcanic activity, and produced in seashore in Sarabong, Byeoldobong, Jeju-si.
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Natural History Exhibitions
Natural History Exhibitions
Natural History Exhibition Hall displays the natural history items including marine life, soil and rocks, and fauna and flora of Jeju in a three-dimensional way. It is divided into Ecology Hall of Marine Life, Soil and Rock Exhibition Hall, and Land Ecosystem Hall.
Ecology Hall of Marine Life displays 354 items of fish and shellfish collected from the coastal waters of Jeju including a 4.5m long regalecus russelli, a whale shark, an abalone, and a diamond back squid.
Soil and Rock Exhibition Hall displays shellfish fossils, fossil bird footprints, and Manjang Cave miniature and shows the Jeju formation process and volcano eruption scenes.
Land Ecosystem Hall has six areas such as costal wetland, indeciduous broad-leaf forest, grassland, deciduous forest, needle-leaf forest, and high mountain shrubbery ( Baeknok Lake area), in which all of fauna and flora specimens in Jeju are displayed. The specimens of spot-billed ducks, white-backed woodpeckers, brown-eared bulbuls, milkweed butterflies and fireflies are displayed in a dynamic way. It shows the film on Snakes and preserved plants in Jeju. It also displays 11 mushrooms, 10 tangerines, 512 insects and 26 animal bone structures.
Straw rope volcanic stones
'‘Pahoehoe’ is a dialect of native Hawaiians, which means “very cruel”. It has low viscosity and high liquidity. The surface of a lava flow is even and smooth, and it developed in a straw-rope structure. Areas having such a characteristic of lava are called as “Bille” in Jeju dialect. Bille Lava has wide developed over the Eastern and Western areas in Jeju, creating tumulous lands as well as lava caves such as Billemo Cave.
Volcanic bomb
It is a pyroclastic rock with 64mm in diameter which shows a circular shape created by liquid lava rising from a crater due to volcanic eruption, rotating and rubbing in the air. In jeju, cinder cones in almost all areas show volcanic bombs. Their shape is almost sweet potato-shaped spindle type, and the size of the biggest one reaches up to 1~2m.
Lava tree mould
When basalt lava having strong flowing feature flows and covers a tree trunk, it is cooled and hardened due to moisture from the tree, and the tree burns into charcoal or ash, or disappears due to high temperature of lava. When lava continuously flows and moves, the lava level lowers, making cylindrical empty space with the shape of a tree trunk, which is called as lava tree mould.
Lave tree mould cast
It is created by flowing lava into the gap of tree residues after making a lava tree mould. When there is a tree on the way of lava moving, lava covers the tree having moisture, and the gap between lava and tree barks is quickly cooled, and the inside is carbonized by the heat of lava, converting into charcoal. Lava again penetrates into the gap, making comb pattern. It has a unique structure showing the frame of a tree. As its shape is beautiful, it is called as ‘mysterious stone.’
Lava ball
When basalt lava flows along a flow path, one lump rotates in lava and comes away from lava, or one lump rolls and rounds out. This lump is called a lava ball. Sometimes, flowing lava covers scoria and flows together. Especially, bumpy shape in a lava ball seems like biceps, so it is sometimes called ‘popeyes stone.’
Udo reed fossil
Leaves, stems and flower fossil of reed and bio-imprinted fossils from the intertidal zone are produced from the upper part of a tuff cone in Soemeorioreum, Udo formed at the end of the Quaternary period of the Cenozoic era, which is the evidence that Udo and Seongsanpo was connected to each other through a wide reed forest and back bay at that time.
Semblis phalaenoides
Larvae live in a river or pond where the flow of water is slow, and protect themselves by making a cylindrical house with small twigs. Adult insects can be found around rivers or valleys and are active from June to August.
Anthocharis scolymus
and are active from the mid-April to the beginning of May. It flies in a straight line, and flies up and down around one place. Grown larvae become pupae around June and July for the winter. The period is up to 8~9 months, during summer, fall and winter. The end of a fore wing curves like a hook, so it is called as a hooked butterfly.
Roe deer
It lives in a deciduous forest in Gotjawal, Oreum, Jeju. Especially, it mainly lives in bushes in the subalpine zone at an altitude of 1,600m.
Badger
It mainly lives in valleys or forest zones in Hallasan, and is active at night. It breeds by digging a tunnel and sometimes hibernates.
Stork
It is an endangered species designated as a natural monument, which rarely visits Jeju in winter. It winters at marine intertidal zones, habitat for migratory birds or reservoirs, and rests standing on one leg.
Pelican
In Korea, it was first found and recorded in Gapado in 1978, the only specimen in Korea. It is estimated that they flied to the sea in Jeju during the annual migration and then they lost their way.
Cormorant
The whole body is glossy black and the inside of a beak is yellow. They dive and snatch fish, and rest on the rocks on the seashore or a seashore cliff.