Most families land at Incheon Airport and head straight for Seoul. Very few know that on the same island, a short drive in the other direction, the sea pulls back twice a day and leaves a huge stretch of seabed you can walk on. A tractor tows you out, someone hands your kid a rake, and an hour later you have a bag full of clams.
We have done this three times now with a two-year-old and two grandparents. It is the easiest "only in Korea" outing we know, and almost no foreign visitors are there.
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| Two adults and a toddler in waders digging for clams on a Korean mudflat at low tide |
Quick facts
- Where: Masian Beach, Yeongjong Island, Incheon (the same island as the airport)
- Time needed: 3 to 4 hours including washing up
- Best for: ages 2 and up
- Season: roughly spring to autumn(Mar-Nov.) on days when the tide allows
- Cost: 10,000 won per adult, 5,000 won for elementary school children, 3,000 won for preschoolers, plus small rental fees (prices from our October 2026 visit)
- English: the staff are mostly older locals from the fishing village and speak little English, but the flat is full of young Korean parents who do, and they are quick to help. Payment is at a kiosk, and this guide covers the rest
Why Masian works for families
Korea has dozens of mudflat villages, but many expect you to bring your own gear and know what you are doing. Masian is set up for beginners. Check-in, boot rental, tools, washing area and snack bar are all in one building next to the car park. You can arrive with nothing but spare clothes.
First, check the opening hours
You cannot just turn up. The flat is only open while the tide is out, and the hours change every day. General tide tables will not give you the right answer, because the operator sets its own opening hours based on the tide. The operator posts a calendar image each month on its Naver Map page. Open this link, tap the 소식 (News) tab, and look for the newest post.
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| Example: the October 2026 calendar. Source: Masian mudflat operator (Naver Map). Always check the newest one before you go. |
The calendar is in Korean, but it is easy to read:
- Weeks run Sunday to Saturday, left to right
- Each day shows the hours the flat is open, in 24-hour time. "08:00~13:00" means 8 am to 1 pm
- Some days show two time ranges, because the tide comes back in at midday
- Red dates are Sundays and public holidays, blue dates are Saturdays. These are the busiest days
Good to know:
- No reservation is needed
- It stays open in the rain
- You can arrive any time within the posted hours and stay as long as you like
Treat the posted opening time as an estimate. On our last visit the calendar said 9:00, but the water had not gone out far enough and we were let in at 9:30. Arrive 20 to 30 minutes early, pay, get your gear on, and you will be first onto the flat.
Getting there
- Map apps: Google Maps is unreliable for driving and walking directions in Korea. Use Naver Map or KakaoMap, and paste in the Korean name: 영어조합법인 마시안
- From Incheon Airport: about 20 minutes by taxi, roughly 15,000 won one way. Show the driver the Korean name above
- From Seoul: about one hour by car
- Parking: free, but you must register your car at the desk after returning your rental gear, before you drive out
On weekends and school holidays the car park fills quickly, so aim for the opening time.
What you pay for and what you get
Prices (August 2026)
Admission
- Adult: 10,000 won
- Elementary school child: 5,000 won
- Preschooler: 3,000 won
Rentals
- Rubber boots: 2,000 won
- Rake: 1,000 won
- Sled: 3,000 won
Tractor wagon
- Going out: 2,000 won
- Coming back: 1,000 won
For sale at the desk
- Gloves: 1,000 won
- Large take-home tub for clams: 3,000 won
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| Rental boots in every size (try a pair on before you choose) and the sleds you will be glad you rented |
A family of two adults and one preschooler pays about 43,000 won in total with boots for everyone, two rakes, a sled and the tractor both ways. That is roughly 30 US dollars.
You pay at a kiosk before going in. Each person receives a vest and a mesh bag. That bag matters: you may only take home what fits in it, and no other containers are allowed on the flat.
Worth renting:
- Rubber boots (2,000 won), available in many sizes including small children's
- A rake (1,000 won) for digging
- A sled (3,000 won). Do not skip this one. You will be carrying water, tools and spare clothes across slippery mud, and when little legs give up, the sled becomes a taxi
The tractor ride
A tractor pulls an open wagon out across the mud. It costs 2,000 won per person going out and 1,000 won coming back, children included, and cards are accepted. During school holidays children sometimes ride free, as they did on our August visit. For most kids this is the highlight before the digging even starts.
The drop-off point is not the end of the line. Walk a little further out and the clams get bigger and more varied.
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| The tractor wagon that takes you out across the mud. Kids love it |
What you will find
- Near the entrance: plenty of small surf clams. Good enough for toddlers who just want to dig and find something
- Further out, past the tractor stop: larger hard clams and big flat clams
- Everywhere: tiny crabs and lugworms, which our toddler liked as much as the clams
- Razor clams: look for small keyhole-shaped holes. Sprinkle coarse salt in and the clam pops up. Bring your own salt
In 90 minutes, five of us (one of them two years old and mostly watching crabs) filled four mesh bags to the top.
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| Nature you can touch. No screens, no tickets, just mud and clams |
Facilities
- Outdoor washing area with more than 20 taps
- Men's and women's changing rooms
- No showers, so bring a full change of clothes
- Snack bar with ramen, dumplings, hot dogs, slushies and drinks
- Shaded benches by the shore and an indoor rest area for anyone who would rather not get muddy
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The snack bar (left) and shaded seating by the shore (right), |
What to bring
- Wide-brimmed hat and sunscreen. There is no shade on the flat, and the wet mud reflects the sun. We burned on a cloudy day
- Long sleeves and gloves
- Drinking water (You can buy it there)
- Spare clothes and a towel for everyone
- A waterproof pouch or zip bag for your phone
What do you do with the clams?
This is the question most visitors forget to ask.
- If you have a kitchen (an apartment rental, or you live here): fill a bottle with seawater from the tap beside the washing area. Soak the clams in it at home and change the water several times. Surf clams hold a lot of sand and need a long soak
- If you are in a hotel: you will not be able to cook them. Go for the experience, keep your haul small, and decide in advance what you will do with it. The snack bar does not cook your catch
Is it worth it?
Honestly, I think I enjoy it more than my son does. There is something addictive about digging into wet sand and feeling a clam under your fingers, and I keep saying "five more minutes" long after he has moved on to chasing crabs. I am the one who keeps booking the next trip.
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| Our haul after 90 minutes, soaking in seawater for the ride home |
So yes, if your family likes being outdoors and does not mind mud, go. It is cheap, close to the airport, and nothing like the palaces and theme parks on most Korea itineraries. If someone in your group dislikes heat and dirt, the shaded benches and snack bar will keep them happy while the rest of you dig.
Three things to remember: check the opening hours, rent the sled, and cover up from the sun.
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