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Ragworm Guide Ireland: Buy It, Keep It, Fish It Right

Irish Shore FishingUpdated 18 July 2026

Ragworm catches almost everything on the Irish shore. Where to buy or dig it, how to keep it alive for days, and how to hook king rag and harbour rag properly.

  • ragworm
  • king ragworm
  • bait guide
  • shore fishing Ireland
  • bass bait
Ragworm Guide Ireland: Buy It, Keep It, Fish It Right

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Ragworm on the Wicklow shore

Ragworm is the most versatile bait on Wicklow beaches and piers, from Greystones shingle to Brittas sand and Arklow. Where lugworm is the specialist's choice for specific species, ragworm catches almost everything, bass, flounder, whiting, wrasse, pollack, mullet, sea trout and more. Every shore angler in Ireland should understand how to source, keep and use ragworm effectively.

Two species, which to use

King ragworm

Alitta virens

The larger of the two, reaching 30 to 50cm and occasionally much longer. Dark red-brown with visible legs along the body. King rag is the preferred bait for bass and smoothhound, the size and movement of a large king rag is irresistible to predatory fish. They have strong jaws and will bite, pinch just behind the head when threading onto a hook.

Harbour ragworm

Hediste diversicolor

Much smaller, typically 5 to 15cm, found in vast numbers in estuaries, mudflats and harbours. Red-brown with a distinctive iridescent sheen. Harbour rag is the go-to bait for flounder, mullet and smaller species. Used in bunches of three or four on a size 1 hook it is one of the most effective all-round shore baits available.

Sourcing and storage

Buying from tackle shops

Most Irish tackle shops stock both king and harbour rag, ordered fresh twice a week. Call ahead to check availability and order in advance if you need a specific quantity. Ask when the delivery came in, fresh ragworm within 48 hours is significantly more effective than older stock.

Digging your own

Harbour ragworm is abundant in muddy ground around Wicklow Town Pier and the Vartry River mouth. Dig at low tide with a flat-tined fork. King ragworm is found in coarser sand and gravel in the lower intertidal zone near rock structures.

Storage at home

Store in the fridge (not the freezer) in damp newspaper or seaweed, never in water, which kills them rapidly. Change the newspaper daily. Keep at 5 to 8°C and use within three to four days of purchase.

How to hook ragworm

Threading (bass)

Push hook into worm's head, thread body up the shank, leaving 5 to 8cm of tail to wriggle freely

Bunch fishing (flounder)

Thread three or four harbour rag onto the hook, leaving all tails free, maximum scent and movement

Tipping

Add a small piece of ragworm to a lugworm or mackerel bait, a cocktail particularly effective for whiting

On a float (wrasse, mullet)

Thread harbour ragworm on a size 8 to 10 hook and fish beneath a small float close to structure

Best species for ragworm

Bass

King rag on a running ledger close to rock structure is one of the most effective bass baits from Irish shores, particularly in summer when bass are hunting actively.

Flounder

Harbour rag in a bunch consistently outperforms lugworm in sheltered harbour and estuary ground through autumn and winter.

Whiting

A tip of ragworm on black lug is the standard winter whiting bait on Wicklow beaches, the two baits complement each other.

Wrasse

Ragworm fished on a float or paternoster close to kelp and rock structure is an excellent wrasse bait from spring through autumn.

Mullet

Harbour rag on a size 8 hook with a small float is one of the few reliable mullet baits from Irish pier marks, use after groundbaiting with bread.

Key points

  • 1King rag for bass and larger species, harbour rag for flounder, whiting and mullet
  • 2Store in damp newspaper in the fridge, never in water which kills them within hours
  • 3Thread king rag from the head, leaving the tail to wriggle freely
  • 4Bunch harbour rag three or four worms at a time for maximum effect
  • 5Buy fresh, ragworm older than four days loses most of its effectiveness
  • 6Keep cool on the beach, a cool bag out of direct sun makes a significant difference

Plan your next session

People also ask

Common questions

What is the difference between king rag and harbour rag?

King ragworm are larger, tougher and prized for bass and smoothhound; harbour rag (maddies) are smaller, softer and excellent for flounder and small species from estuaries and piers.

How do you keep ragworm alive for fishing?

Use shallow trays with fresh newspaper, cool but not freezing conditions and replace damp paper daily. Never leave them in sealed plastic or fresh water, they need oxygen and brackish dampness.

Can you dig ragworm legally on Irish shores?

Public foreshore access varies; avoid private ground, protected habitat zones and SAC restrictions. Buy from reputable Irish tackle shops when uncertain, quality bait saves time and protects beds.

How many hooks of ragworm per cast for bass?

One or two chunky tips threaded on a 2/0 to 4/0 hook usually beat a giant bundle that masks the hook point. Refresh rag after each missed take so scent stays sharp.

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