[The Wonders of Korea] Ep2. Mud Flats, The Land of Coexistence
해외문화홍보원의 지원으로 KBS WORLD에서 한국의 아름다운 문화를 소개하기 위해 2015년에 제작한 영상입니다.생태계의 보고인 갯벌을 무대로 살아가는 작은 생명의 생태와 문화, 그리고 그 갯벌에 살아가는 사람들의 이야기를 담고 있는 영상이다.[내레이션]Small rivers come together and flow towards the sea.[내레이션]When the rivers are about to merge with the sea, strangely shaped reed colonies come into view.[내레이션]Beyond them lies a land of mystery, where the seawater ebbs and flows twice a day.[내레이션]This is a tidal flat, an amazing community of living things built by the reeds, the sea and the mud.[내레이션]When the water ebbs out of the mud flat, numerous bluespotted mud hoppers show up, overrunning the muddy surface.[내레이션]This mud hopper comes out of a hole and rolls around in the wet mud to keep its scale-less skin from drying up.[내레이션]It can easily move around the flat thanks to its pectoral fins.[내레이션]Hungry after waiting six hours for the low tide, the fish starts feeding in its own peculiar way.[내레이션]The mud hopper fills up its cheeks with water.Then it uses the water to filter out the mud. What's left, usually phytoplankton, becomes its meal.[내레이션]Now fully fed, the mud hopper again heads for the water.[내레이션]It's looking to pick a fight with smaller mud hoppers.[내레이션]It spreads its fins and jumps about to intimidate its competitors and also to gain an edge in mating.[내레이션]Bluespotted mud hoppers spawn until September. Fertilized eggs hatch about 15 days later.[내레이션]Child-rearing is left solely up to the male.[내레이션]This one's eyes protrude even more at the appearance of an intruder eyeing its abode.[내레이션]It spreads out its fins to scare away the trespasser. The mud hopper barely succeeds in defending its turf.[내레이션]But its relief is short-lived. Another male mud hopper challenges him.[내레이션]The newcomer opens up its mouth menacingly. The tidal flat is a fierce battleground for survival.[내레이션]But no matter how clever its camouflage or survival tactics may be, there is an enemy that must be avoided at all costs.[내레이션]The enemy is a mud hopper fisherman. He has to approach within 10 meters of his target.[내레이션]The fisherman even breathes slowly, lest he should scare away the ever-alert mud hoppers.[내레이션]Tension runs high amid the silence.[내레이션]The mud hopper is known to be the most agile among the tidal flat creatures.[내레이션]The fisherman employs a unique technique to catch the mud hoppers, sweeping the flat with a bait-less line.[내레이션]The fisherman throws out a line fitted with only a hook and in a flash snatches up a mud hopper.[내레이션]He never misses. He's so good that he can catch up to about 400 mud hoppers over the two or three hours of low tide.[내레이션]However, the fisherman never works past the set amount or time.[내레이션]He is well aware that he's part of the tidal flat community.[내레이션]Countless creatures live in harmony on the mud flat. Although instinct seems to guide all their actions, they don't live just to survive.[내레이션]These crustaceans busy feeding themselves from the mud flat are called Japanese ghost crabs.[내레이션]They're the flat's cleaning crew. They provide oxygen to the flat by burrowing tunnels and they also keep the area clean by feeding on microalgae, one of the causes of red tide.[내레이션]The ghost crab's every action helps the tidal flat breathe.[내레이션]The tidal flat changes with the energy from all the activities of numerous life forms.[내레이션]Sand crabs are also a big contributor to the health of the mud flat. During their mating season in May and June, the crabs sport a vivid red hue.[내레이션]The sand crab is recognizable by its single large pincer, which is bigger than its body. The huge claw of a male sand crab indicates that his genes are strong and healthy.[내레이션]Sand crabs are known to be very watchful. It plays a special trick when it detects a threat.[내레이션]It uses its legs to loosen a chunk of mud and takes it to block the entrance to its home, that can stretch down for up to a meter.[내레이션]It looks similar to the closing hatch on a submarine.[내레이션]More amazingly, the chunk of mud randomly taken from the flat fits the hole entrance perfectly.[내레이션]The tidal flat community suddenly becomes restless.[내레이션]When the tide comes in, most of the creatures retreat to their homes in the mud.[내레이션]But some head the opposite direction, towards the water. They're mudskippers.[내레이션]These air-breathing fish are gluttons, greedily feeding until the rising tide comes right up to their noses.[내레이션]These animals have developed their own survival tactics while protecting the mud flat.[내레이션]Several waterways carry the vestiges of land out to the sea.[내레이션]Suncheon Bay is the product of eons of mud accumulation. The mud has increased by one millimeter a year. Measuring more than 22 million square meters, Suncheon Bay is world-famous for its abundance of life.[내레이션]Suncheon Bay's nickname "the bedrock of life" is derived partly from the vast colonies of reeds.[내레이션]The circular reed fields appear to have been drawn with a compass. The mystery of reed circles has not yet been solved.[내레이션]Very few people are aware of what goes on inside the reed fields.[내레이션]Carefully venturing out of the burrows are mudflat crabs. Their distinct odor resembles horse dung.[내레이션]Even among the mudflat crabs there are some receiving special treatment.[내레이션]They are red sea crabs, a class two endangered species.[내레이션]The red sea crab, with two pincers as big as its body, is capable of tenaciously gripping its prey. Its legs are covered in stiff hair, just right for climbing up a reed stalk.[내레이션]Since red sea crabs breathe through their gills, they have to remain in moist places.[내레이션]They are voracious eaters, but their favorite food is young reed leaves. Now you understand why they won't leave the reed field.[내레이션]There are other rare life forms found only in Suncheon Bay.[내레이션]Halophytes or salt plants inhabit the areas bordering the sea and mud flat.[내레이션]Another fuzzy creature can be seen only in places with the right combination of mud and sand. It's the fiddler crab.[내레이션]This crustacean has a single pincer almost the size of its body.[내레이션]A male fiddler crab builds a round dome near its burrow and dances in front of it to woo a female.[내레이션]But it's easily spooked. It raises up its huge claw when threatened. The agitated behavior is just like that of a scared child.[내레이션]The reason fiddler crabs are not readily spotted on the tidal flat is because their habitats are limited and their number is dwindling fast due to coastal development projects.[내레이션]Time at the mud flat is set by the sun and the moon. The mysterious forces that move the tides twice a day originate from the moon.[내레이션]The moon exerts its influence more strongly at night, pulling the seawater all the way to the inner edge of the flat.[내레이션]Even the smallest creatures living on the flat abide by the lunar schedule.[내레이션]People of the tidal flat also live by the flat's timetable.[내레이션]Said to live in two shifts, a fisherman heads out to the sea at tide time.[내레이션]His fish farm is located far out in the sea. The tide has filled his nets overnight with the mud flat's gifts.[내레이션]Among his catch, there is a fish species known for its nasty temperaments. It's a bizarre-looking prehistoric species called green eel goby.[내레이션]Known to live only in clean mud flats, green eel goby are found only in Suncheon Bay nowadays.[내레이션]The presence of green eel goby indicates that the mud flat is clean and healthy. Their eyes have shrunk, but they still retain a set of mean teeth.[내레이션]The green eel goby is nocturnal, but even at night it doesn't often show up on the flat, earning itself the nickname of the hermit of Suncheon Bay.[내레이션]It makes several deep burrows in the mud and just pokes out its teeth to catch prey by creating a whirlpool.[내레이션]Green eel gobies are hung out to dry under the sun. They are rarely found in Korean markets, because most of them are exported to Japan. The dried green eel goby is a special treat even for Korean fishermen.[내레이션]These creatures have lived off the tidal flats for thousands of years. Compared to them, humans are newcomers to the flats.[내레이션]Mud flats represent these women's precious livelihood. So the mud boats are their important assets.[내레이션]The mud boat, also called "neol" in Korean, is made of dried cypress tree. It glides smoothly on the mud flat and is lightweight, making it quite portable.[내레이션]The mud flat permits human access twice a day without fail. The water-receded Suncheon Bay stretches out for four kilometers.[내레이션]This mud flat is a community workplace for the locals. It provides honest earnings to those who believe in hard work.[내레이션]The mud sucks in the workers up to their waists. But these women have the know-how gained over a long time.[내레이션]Razor shells are noted for their concealment skills in the mud.[내레이션]Armed with a long, hard foot, the razor shells hide deep in the mud.[내레이션]These women have to plow the mud with their hands to find the breathing holes and quickly scoop up the razor shells before they dig even deeper.[내레이션]The plump razor shells are most prized when aged between a year and a half and three years.[내레이션]The mud flat takes care of its creatures and generously shares its bounties. This is why the locals can't help but be grateful for it.[내레이션]This old woman who raised her seven children by working in Suncheon Bay still makes her living on the mud flat.[내레이션]On another side of the bay women are busy collecting marsh clams.[내레이션]Marsh clams usually live where the freshwater and seawater meet, but this breed is found only in tidal flats. They're great for making rich-tasting broth.[내레이션]The myriad of animals and plants living on the mud flat and the humans who live off of those small life forms have combined to create a unique tidal flat culture.[내레이션]Just as the sun rises in the morning, the tides ebb and flow on the flat in a timely manner.[내레이션]Tidal flats create inexplicable beauty by bringing together the coast and land.[내레이션]When the vast sea exposes what's hidden under the waves, the traditional fishing nets are revealed as well.[내레이션]This fishing technique makes use of the big difference between low and high tides. Poles are driven deep into the mud and nets, which are taller than most adults, are hung between the poles.[내레이션]Round fish traps are placed below the nets to catch the fish that couldn't escape during the low tide.[내레이션]This local fisherman makes a living off the sea and mud flat.[내레이션]His fish trap is brimming with fat Spanish mackerels, as well as fresh crabs.[내레이션]He spots something he rarely sees. They're tiger crabs.[내레이션]Striped like its namesake, the tiger crab is Korea's indigenous species not found anywhere else.[내레이션]The slow-moving tiger crab generally hides in the sand about five meters deep before attacking its prey. It's pincers are so powerful that they can crush the shells of blue crabs and sea snails in an instant.[내레이션]Much mending is required to maintain the nets passed down from his grandfather. Making a living from nature demands constant alertness and diligence.[내레이션]The fisherman lets go of the young fish and leaves the dead ones for the birds.[내레이션]He doesn't complain about how much the sea gives him. He's happy if he catches just enough to carry on his shoulders.[내레이션]He's more than willing to share the catch with his neighbors.[내레이션]The ever-changing scenery of the sea, the mud flats, and the sky is mesmerizing.[내레이션]East Asian seepweed endures high salinity and its Korean name "chilmyeoncho" comes from the fact that it changes color seven times, from green to red.[내레이션]The East Asian seepweed and other salt plants are a sight to behold.[내레이션]They form respective clusters, dutifully carrying out the natural purification job for the mud flat.[내레이션]There is an intriguing mud field near the salt farm. Called the wild ginseng of tidal flats, the glasswort is packed with minerals and other healthy nutrients.[내레이션]This is why the glasswort has long been used as a magical ingredient in many cuisines.[내레이션]As the only briny plant on earth, glasswort has served as a natural seasoning...[내레이션]And it is counted among the healthiest ingredients used in French cuisine. It goes very well with fish or seafood, especially carp and lobster.[내레이션]Favored for its crunchy texture, glasswort stalks are pickled or used in a salad.[내레이션]The flavorsome ingredient from mud flats has enriched mankind's diet.[내레이션]The tidal flat is like a gastronomic heaven for the sea birds and migratory birds.[내레이션]Migratory birds make annual visits to Gaksi Rocky Cliffs in the Yellow Sea. The rocky islet is a habitat for a flock of black-faced spoonbills. About a hundred spoonbills breed here every year.[내레이션]Since the mud flat is alive and well, it sees a variety of visitors.[내레이션]The first group of guests are seagulls, a fixture in any coastal area.[내레이션]The seagulls are waiting for lively and delicious Japanese ghost crabs.[내레이션]Far Eastern curlews have flown some 8,000 kilometers without a break. They have an amusing way of feeding on the crabs, eating the bodies first as a main course and then the legs as dessert.[내레이션]Eastern great egrets are the epitome of patience, waiting with poise for the right moment.[내레이션]In contrast common greenshanks scamper about ceaselessly to find food.[내레이션]The spoonbill is named for its flat, spatula-like bill, which is swung side to side to stir up the water.[내레이션]A single spoonbill is known to consume hundreds of ghost crabs a day.[내레이션]In spite of the bird's voracious appetite, ghost crabs still swarm the mud flat of Ganghwa, demonstrating the mud flats' resilient life force.[내레이션]Healthy mud flats promise co-existence to all the species. That promise is what makes the spoonbills return to the tidal flat every year.[내레이션]Small creatures live and breathe in this place rendered incredibly unique by the sun and the moon, and the high and low tides.[내레이션]It's a place that celebrates the colorful diversity of life at the borders of the sea and land.[내레이션]This is the mud flat, the land of co-existence that has been and will continue to be preserved for many years to come.
2016.03.22