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Clew Bay

Bay · Salt water · in Clew Bay and Achill

A wide shallow bay filled with several hundred drowned drumlins — small rounded glacial hills whose tops form low wooded islands — producing a maze of shallow channels, sand and mud flats and sheltered water quite unlike the open Atlantic outside it.

Safety: tides and being cut off — can cause serious injury or death. 4 more points apply here.

What each one does, and what reduces it ↓

FishingHQ describes what this place is, not whether you may fish it. Access, permits and who to ask.

What you can catch here

Documented at this place, grouped by how you would be fishing, with how strongly the sources support each one. This is what has been written down, not a forecast, and being listed is never permission to fish.

From the shore · 5

From a boat · 1

What these strengths mean
Established quarry
Fishing sources describe this as a normal local target here, not merely as caught.
Recorded here
At least one credible public account of this species being caught here. That is all it means.
Places, accounts and sources are counted separately
A fish documented once at each of six marks is still documented once at each of six marks. Breadth is reported as a place count and never raises the strength, and sources are deduplicated across places so one publisher covering a whole coast counts as one. A fishery account is a source describing the fishing; a recorded catch is a report of a specific catch. They are counted apart because they are not the same evidence.

Fish documented nearby, not here

Nothing below has been documented at Clew Bay itself. Each one has been documented at a named place on the same ground, and the places are listed with it. Treat this as what the water around here holds rather than as a catch list for this mark.

Widely documented on this ground

Documented at three or more neighbouring places, fished a way this place is also fished. That is a pattern about the ground rather than about any one mark, and it is the closest this site comes to saying you will probably meet a fish somewhere nothing has been written about.

From the shore

  • Ballan wrasse — documented at Keem Bay, Achill Island; Roonagh Pier; Mulranny (+2 more)
  • Conger eel — documented at Roonagh Pier; Mulranny; Purteen Harbour (+1 more)
  • Saithe — documented at Roonagh Pier; Mulranny; Purteen Harbour (+1 more)
  • Bull huss — documented at Roonagh Pier; Mulranny; Purteen Harbour
  • Dab — documented at Bertra Strand; An Corraun; Keel Strand
  • Small-spotted catshark — documented at Roonagh Pier; Mulranny; Cloghmore Harbour (+1 more)

Also documented at neighbouring places

One or two accounts each, on the ground around here. Enough to know the fish is caught in these waters; not enough to say anything about this place.

From the shore

How people fish it

Practised here: Sea fishing.

Methods the sources name for this ground. Each one is explained in full on its own page.

  • Spinning

    Casting an artificial lure and retrieving it so that it moves like something alive — the most direct form of lure fishing.

  • Ledgering

    Fishing a bait on the bottom held by a weight, with no float — the simplest way to fish at distance, in depth, or in wind.

  • Float fishing

    Suspending a bait at a controlled depth beneath a buoyant indicator — the most visual, most controllable and most widely applicable method in angling.

  • Kayak fishing

    A platform rather than a technique: quiet, shallow-draught access to water no other craft reaches, bought at the price of exposure, and a discipline where the decision not to launch is part of the skill.

The ground and the water

The ground
A wide shallow bay filled with several hundred drowned drumlins — small rounded glacial hills whose tops form low wooded islands — producing a maze of shallow channels, sand and mud flats and sheltered water quite unlike the open Atlantic outside it.
Exposure
Substantially sheltered by Clare Island and Achill across the mouth, which is why the inner bay is workable in weather that closes the coast.
Depth
Shallow throughout the inner bay with deeper channels between the drumlins, and deeper water towards the mouth.
Tide and flow
Large areas dry on the ebb and the water drains through narrow channels between the islands, so the useful ground and the safe passage both change through the tide.

Safety

Tides and being cut off — Can cause serious injury or death

The flood fills the ground behind an angler before it covers the ground in front, so the water arrives between them and the shore while the position they are standing on is still dry.

What reduces it: Read the tide table before going rather than after arriving, set a leaving time from the tide rather than from the fishing, and identify the exit and how long it takes while the ground is still uncovered.

Cold water shock — Can cause serious injury or death

Northern European water is cold enough for most of the year to trigger the involuntary gasp and the loss of swimming ability that decides most immersion deaths, and it does so within the first minute, long before hypothermia is relevant.

What reduces it: Wear a buoyancy aid rather than carry one, carry a means of calling for help on the person rather than in a bag, and plan on the assumption that an unplanned entry into the water is survivable only if somebody knows immediately.

Moving water and currents — Can cause serious injury or death

Narrow sounds, estuary mouths, harbour entrances and channel edges run hard on the tide, and the water moving through them is a whole bay emptying and filling through a gap. Somebody who enters that water is carried, not swum, and shingle and sandbanks shift under the current.

What reduces it: Treat the state of the tide as part of the mark rather than as a timing detail. Do not wade a channel edge. Stay off shifting banks on a making tide.

Cliffs and rock platforms — Can cause serious injury or death

Long-period ground swell generated by storms in the open North Atlantic arrives with its energy intact and independently of local wind, so a rock platform can be taking sets that arrive without warning under a blue sky and a flat forecast. The marks with deep water close in are the most attractive and the most exposed, and this is how people are swept off this coast.

What reduces it: Read the swell forecast — period as well as height — rather than the wind forecast. Watch any platform through several full set cycles before committing to it, and pick a position you could leave immediately. Deciding not to fish a mark is routine here rather than cautious.

Fishing alone — Can cause serious injury or death

Much of this coast is remote, has no mobile coverage and is a long way from help, so an ordinary injury — a turned ankle on broken rock, a fall on a wet slope — becomes a serious problem because nobody is coming and nobody knows where to look.

What reduces it: Tell somebody the mark and the return time. Carry a means of calling for help that does not assume mobile coverage. Do not fish exposed rock alone.

Rules and access

FishingHQ does not know the current access position here. Sea angling in Ireland is not generally licensed, but access rights, landowner permission, harbour and local authority rules, conservation designations and national fisheries measures all apply and all change. Check the current position with Inland Fisheries Ireland, the harbour or local authority and the landowner before going.

Particular to this water: Shellfish harvesting areas are classified for food safety and are opened and closed on monitoring results a gatherer cannot see. Neither cooking nor appearance removes a biotoxin. Check the current classification with the responsible authority before taking anything.

Who holds the answer:

  • Inland Fisheries Ireland, which administers angling and fisheries protection.
  • The harbour or local authority, for access to structures and the shore.
  • Inland Fisheries Ireland, for freshwater fisheries, for salmon and sea trout licensing and tagging, and for the sea angling conservation measures it administers.
  • The government department responsible for the marine, and the Sea-Fisheries Protection Authority, for sea fisheries measures, minimum sizes, bag limits and protected species.
  • The National Parks and Wildlife Service, where a designation constrains access, disturbance or collection.
  • The Food Safety Authority of Ireland and the shellfish classification and biotoxin monitoring programme, before anything filter-feeding is taken.
  • The harbour authority, local authority, club or landowner controlling the specific structure or shore, whose permission is theirs to give and is not stated here.
  • The Irish Coast Guard and the RNLI, for safety guidance on this coast.

Nearby fishing

Other publicly documented places within about 40 km, by distance. Positions are approximate public geography and are never exact marks.

Clew BayBertra StrandMulrannyRoonagh PierAn CorraunCloghmore HarbourKillary HarbourKeel StrandLough Mask
Clew Bay and the publicly documented places around it. Approximate positions, not marks. On a narrow screen the plot is wider than the screen and scrolls sideways inside its frame. Positions are approximate by design — they are capped at about a hundred metres and describe where a named public place is, not where fish are and not a mark. Everything plotted here is also listed below.

Sources for this place

  • EMODnet — the European Marine Observation and Data Network — The European Commission, assembled from the national hydrographic offices, geological surveys and marine institutes of the member states (Scientific institute)Relied on for: Charted bathymetry, seabed substrate and seabed habitat for European sea areas, assembled from the national hydrographic and geological surveys, at the resolution the product publishes.States this directlyCitation checked — the work exists and is described correctly
  • The European Environment Agency's assessments of Europe's waters, seas and coasts — European Environment Agency, Copenhagen (Conservation authority)Relied on for: Assessment of Europe's coasts and regional seas, including the condition of coastal water bodies, the pressures recorded on them and the coverage of designated sites.Background and mechanism onlyCitation checked — the work exists and is described correctly
  • ICES Advice on fishing opportunities, catch and effort — International Council for the Exploration of the Sea (Scientific institute)Relied on for: Ecoregion description, stock distribution, nursery function and the hydrography of the north-east Atlantic and Baltic sea areas assessed.States this directlyCitation checked — the work exists and is described correctly
  • FishBase: a global information system on fishes — Froese, R. and D. Pauly, eds. — FishBase Consortium (Scientific institute)Relied on for: Recorded distribution, depth range and habitat association of the species named for this ground.States this directlyPassage read and verified
  • RNLI water safety guidance: cold water shock and Float to Live — Royal National Lifeboat Institution (Water-safety or diver-training authority)Relied on for: Cold water shock and the immersion response, tidal cut-off, and water-safety guidance for shore anglers and small-craft users. Cited for the mechanism, which does not vary by coast.States this directlyPassage read and verified
  • Sea Angling in Ireland: the shore marks of Mayo — Sea Angling Ireland (Credible secondary source)Relied on for: A practitioner shore directory describing this mark's ground, species, methods, baits and the character of the access.States this directlyPassage read and verified

How FishingHQ labels evidence is explained in the evidence policy. Last reviewed 2026-08-18.

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