As spring blossoms, you’re likely to encounter a captivating scene by the shorelines or river mouths: crowds of people engaging deeply with a tradition that’s far from your typical daily view.
They’re there for clam digging, an activity that marries the joy of connecting with nature with the pleasure of gathering delectable souvenirs. Ideal for a family outing or a relaxed day with friends, it offers the simple pleasure of being outdoors, hands in the earth, culminating in the shared delight of a meal enriched with your day’s catch.
This pastime is deeply rooted in Japan’s cultural tapestry, depicted in historical art and Edo-period prints, symbolizing a cherished seasonal ritual. The optimal season for clam digging extends from the invigorating early spring air to the milder days of early summer, aligning with the tides to unveil the ocean’s bounty.
At Fukuoka Now, we’ve crafted a guide that strikes a balance between informative and engaging, perfect for everyone from curious first-timers to adept clam hunters. We offer all you need to know, from what to do before heading out to tips for a successful dig, not to mention highlighting Fukuoka’s prime clam-digging spots. A word to the wise: with clam populations on the decline, some areas have become off-limits, so it’s vital to clam dig with care and respect for local guidelines.
Rest assured, every piece of advice in our guide is up-to-date as of March 2024, thoroughly checked with the local authorities to ensure you get the most reliable, enjoyable clam-digging experience.
Season
Though clams are in season from mid-March to late May, the prime clam-hunting time is April to May. The early clam-digger catches the fattest clams!
The absolute best time to go clam digging is at spring tide (the tide just after a new or full moon). This year, spring tides will occur on mid-March up to May as follows:
• March: 3/23~3/25
• April: 4/6~4/8, 4/21~4/24
• May: 5/5~5/8, 5/20~5/23
Source: http://sio.mieyell.jp/select?po=84020
Clam-digging Spots in Fukuoka
• Fukuoka City (2): Muromi River, Wajiro
• Kanda-machi (1): Shiraishi Beach
• Yukuhashi City (2): Minoshima Beach, Nagaihama Beach
• Chikujo-gun (1): Hamanomiya Beach
• Buzen City (3): Unoshima, Shoeura, Hachiya area
• Imazu (Nishi-ku, Fukuoka City): Suspended (banned) spot *for species conservation
Tips
• How to Check the Tides
• Handy Tools
• How to Dig Clams
• Rules for Clam Digging
• Types of clams around Fukuoka
• Useful vocabulary
Kyushu Live – Clamming Adventures in Japan: The Complete Guide with Nick & Julie (Muromigawa River in 2023)
Fukuoka City
Muromigawa River
• Shells: Japanese littleneck, Gould’s razor shell
• Fee: Free
• Paking: None
• Public toilet: None
• Near Atago Bridge, Muromi River, Nishi-ku, Fukuoka
• Access: 15 min. on foot from Muromi Subway Sta.
• https://www.city.fukuoka.lg.jp/nosui/suisanshinko/life/shiohigarinoru-ru.html
Wajiro
• Shells: Japanese littleneck only
• Fee: Free
• Paking: None
• Public toilet: None
• Wajiro, Higashi-ku, Fukuoka
• Access: 7 min. on foot from Nishitetsu Kaizuka Line Wajiro Sta.
• https://www.city.fukuoka.lg.jp/kowan/miryoku/tanoshimu/wajirotideland.html
Photo from ぱちょぴ
Kanda-machi, Fukuoka
Shiraishi Beach
• Shells: Gould’s razor shell
• Picking season: 4/1 (Mon.) ~ 6/30 (Sun.)
• Fee: Free
• Paking (Temporary): Free (open 4/1~6/30, Map)
• Public toilet: Available (4/1~6/30)
• Yobaru, Kanda-machi, Miyako-gun, Fukuoka
• Access: 10 min. by car from JR Obase Nishikodai-mae Sta.
一般社団法人苅田まちづくり観光協会
Yukuhashi City, Fukuoka
Minoshima Beach
• Shells: Mainly Gould’s razor shell
• Fee: ¥500, JHS & ES ¥300, free for infants
• Paking: Free
• Public toilet: Available
• Minoshima, Yukuhashi City, Fukuoka
• Access: Take Taiyo Kotsu Bus Minoshima Line from JR Yukuhashi Sta. (East Exit), get off at the Kaisuiyokoujo Bus Stop.
• https://www.city.yukuhashi.fukuoka.jp/site/kanko/19667.html
Nagaihama Beach
• Shells: Mainly Gould’s razor shell
• Picking season: 3/25 (Mon.) ~
• Fee: ¥500, free for JHS and under
• Paking: Free
• Public toilet: Available
• Nagai, Yukuhashi City, Fukuoka
• Access: Take Taiyo Kotsu Bus Nagai Line from JR Yukuhashi Sta. (East Exit), get off at the Nagai Bus Stop.
• https://www.city.yukuhashi.fukuoka.jp/site/kanko/19667.html
Chikujo-gun, Fukuoka
Hamanomiya Beach
• Shells: Japanese littleneck only
• Picking season: 3/9 (Sat.) ~ early May
• Fee: ¥500, free for ES and under
• Paking: Free
• Public toilet: Available
• Takatsuka, Chikujo-machi, Chikujo-gun, Fukuoka
• Access: 20 min. on foot from JR Shiida Sta.
• https://www.town.chikujo.fukuoka.jp/s023/010/020/030/010/asari.html
• Harvest volume will be limited due to declining clam population (1 netted bag, approx. 1kg, passed out at the entrance)
Buzen City, Fukuoka
Unoshima area
• Shells: Japanese littleneck
• Picking season: 4/20 (Sat.) ~
• Open from PM (not available in the AM)
• Fee: ¥500
• Paking: Free
• Public toilet: Available
• Unoshima, Buzen City, Fukuoka
• Access: 20 min. on foot from JR Unoshima Sta.
• http://www.buzen-kk.jp/osusume_siohigari.html
Shoeura area
• Shells: Japanese littleneck, Gould’s razor shell
• Picking season: 3/23 (Sat.) ~ 3/28 (Thu.), 4/6 (Sat.) ~ 4/11 (Thu.), 4/20 (Sat.) ~ 4/27 (Sat.), 5/4 (Sat.) ~ 5/6 (Mon.)
• Fee: ¥500 *also applies as entrance fee to the beach
• Shoe, Buzen City, Fukuoka
• Access: 10 min. on foot from JR Buzen-Shoe Sta.
• http://www.buzen-kk.jp/osusume_siohigari.html
Hachiya area
• Shells: Japanese littleneck, Gould’s razor shell
• Picking season: 3/23 (Sat.) ~ 3/29 (Fri.), 4/6 (Sat.) ~ 4/12 (Fri.), 4/20 (Sat.) ~4/27 (Sat.), 5/4 (Sat.) ~ 5/11 (Sat.), 5/19 (Sun.) ~ 5/26 (Sun.)
• Fee: ¥500 *also applies as entrance fee to the beach
• Hachiya, Buzen City, Fukuoka
• Access: 13 min. on foot from JR Unoshima Sta.
• http://www.buzen-kk.jp/osusume_siohigari.html
Tips
How to Check the Tides
When it comes to clam digging, the tides are all important. There are two ‘golden hours’ for shiohigari: the two hours around low tide. We recommend getting to the beach just as the tide starts pulling out and finishing up your shiohigari fun by low tide. This website has predicted the prime clam-picking times.
Handy Tools
Hand rake
Digging up sand with your hands is no day at the beach! So use a hand rake to break up the compacted sand and make it easier to dig. But do it carefully – you don’t want to damage you bounty!
Thick rubber gloves
Master clam-diggers often don’t bother with the hoe, but instead wear protective gloves.
Rubber boots
Shiohigari beaches can often be quite rocky and dangerous, so make sure to wear shoes which protect your feet, like rubber boots.
Hat
It can get very hot during shiohigari season – bring a hat and some sunscreen for good measure.
Towel and clothings to change
When the fun is over, you’ll usually find yourself covered in sweat, mud, sand and water! So bring a towel and a spare change of clothes.
Empty bottle
When it’s time to start cooking your clams, you’ll need to rinse off the sand. It’s best to do so using seawater from where the clams lived; so take an empty bottle to the beach and fill it in the sea.
Bucket
Often local fisheries insist you buy or give you a bag to put your clams in, but a bucket tends to be handier, so best bring one along anyway.
Hoe and salt
If you’re after Gould’s razor shells, you’ll need a hoe and salt (see below).
Cooler box and ice
You’ll need to keep your clams alive until you get home, so bring a cooler and some ice to keep your clams fresh until you can put them in the pan.
How to Dig Clams
Look for little holes in the mud. If, when you stamp your foot near the hole, a squirt of liquid shoots out, a clam has probably set up shop there. In fact, since asari (Japanese littleneck clams) are usually found in groups, there might be a mini treasure hoard of clams down there. Once you’ve found your spot, make a hole about as deep as the teeth on your hand-rake are long (around 5-10 cm).
Don’t waste too much time in one space – keep moving until you find an area rich with mollusks. But for Gould’s razor shells, you’ll need to take a different approach. Rake the surface of the sand until you see little holes, then put a pinch of salt into each hole and wait. The clam will shoot out shell first in an effort to escape the salt – grab it, quick (but be gentle)! Check out this video to see how it’s done! Once you’re finished, fill a large bucket with seawater and transfer all your clams to it for the journey home. If it’s very warm outside you should put the bucket in a cooler.
Rules for Clam Digging
• DON’T take baby clams – release any clams less than 3 cm long.
• DO be careful of the tide; it often rises very quickly and covers a greater distance than one might expect. You don’t want to get stranded!
• DO watch your children.
• DON’T enter any areas where fishing/shiohigari is banned or any other restricted areas.
• DO check what shellfish you are allowed to pick before you begin (usually asari clams only).
• DO check what equipment you are allowed to bring. Big fishing nets, for example, are prohibited.
WARNING!
Avoid all broken clams, clams that smell bad, and clams whose shells aren’t tightly closed. If you find one that’s broken and/or smells bad, it’s probably dead. And be careful not to stab or break a clam’s shell whilst digging – it will start to decompose right away. Dead clams are a health hazard, and broken shells also make for gritty eating. So, if in doubt, leave it in the ground!
Shellfish are filter feeders, so they accumulate toxins produced by certain microscopic algae; these toxins cause shellfish poisoning when consumed. These toxins cannot be removed or negated by cooking the shellfish. Every year, the Chikuzen Sea, Ariake Sea, and Buzen Sea are professionally evaluated, and news of any poison shellfish outbreaks that they discover are then passed onto the media and published online. So, keep an eye on the news and check this website before heading to the beach (Japanese only).
Types of clams around Fukuoka
Asari (Japanese littleneck)
Scientific name: Venerupis philippinarum
It lives in the mid to low intertidal zone of bays and estuaries, where it prefers mud, sandy mud and cobble. They can be found buried 2~4 cm below the surface. Each shell’s pattern is unique and distinct! These clams can be used to make delicious clam chowder or spaghetti alle vongole; or try your hand at Japanese cuisine by making sakamushi (asari steamed in sake).
Mategai (Gould’s razor shell)
Scientific name: Solen strictus
A long, narrow saltwater clam. These clams prefer to live around 20~50 cm below the surface. Their taste is a little richer than asari, and they are delicious when fried up with butter!
Hamaguri (Japanese hard clams or Common orient clams)
Scientific name: Meretrix lusoria
Photo: Jun331
This species, which is common in Japan, takes its Japanese name from the words hama (shore) and guri (chestnut), perhaps because they look like chestnuts nestled in the sand. Hamaguri is traditionally eaten by girls during Hina Matsuri, a tradition which is said to help girls find a good husband.
Useful vocabulary
Shiohigari: (n) Clam digging
Kancho or Hikishio: (n) Low tide
Mancho or Michishio: (n) High tide
Horu: (v) To dig.
Kumade: (n) Hand rake
Asari: (n) Japanese littleneck
Mategai: (n) Gould’s razor shell
Ookii: (adj.) Big
Chiisai: (adj.) Small
Takusan: (adv.) A lot
Sukoshi: (adv.) A little
Toreta?: How did the clam picking go?
Originally written in March 2016, updated March 2024.
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NOTE: The information presented here was gathered and summarized by the Fukuoka Now staff. While we have done our best to check for accuracy, there might be errors and details may have changed. If you notice any errors or changes, please contact us. This report was originally written in March 2016.
