Sarn Badrig
Reef · Salt water · in Cardigan Bay and the sarnau
A glacial moraine ridge running some twenty kilometres south-west into Cardigan Bay from the Llŷn coast, built of boulder, cobble and gravel left by an ice lobe. It dries in places at low water and continues as a submerged reef far offshore. There is nothing else like the sarnau anywhere in Britain.
Safety: boat safety — can cause serious injury or death. 3 more points apply here.
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 · 3
What these strengths mean
- Established quarry
- Fishing sources describe this as a normal local target here, not merely as caught.
- Seasonal
- Well supported, and concentrated in part of the year rather than spread through it.
- 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.
Also associated with this ground
Recorded as present here without a documented method or strength behind them.
Fish documented nearby, not here
Nothing below has been documented at Sarn Badrig 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
- European flounder — documented at Pwllheli; Criccieth; Borth (+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
- Ballan wrasse — documented at Porth Ysgaden; Criccieth
- Bull huss — documented at Trefor pier
- Dab — documented at Borth
- Turbot — documented at Borth
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.
- 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.
- Spinning
Casting an artificial lure and retrieving it so that it moves like something alive — the most direct form of lure fishing.
- 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 glacial moraine ridge running some twenty kilometres south-west into Cardigan Bay from the Llŷn coast, built of boulder, cobble and gravel left by an ice lobe. It dries in places at low water and continues as a submerged reef far offshore. There is nothing else like the sarnau anywhere in Britain.
- Exposure
- Fully open to Cardigan Bay's western fetch. The reef breaks swell along its length, which is exactly what makes it a navigation hazard of long standing.
- Depth
- The reef itself is very shallow — drying in places — with deeper water immediately either side of it, which is the structure the fishing is built on.
- Tide and flow
- Streams run along and across the ridge and break over it, and the shallowest sections dry only on large tides.
Through the year
Bass, ray and smoothhound through the warmer months; flatfish over the clean ground either side; a fishery organised entirely around the reef's structure.
The months the sources attach to each species here. Where a species carries no season it is listed underneath rather than assumed to run through the year.
| Species | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| European sea bass — seasonal, recorded in May, June, July, August, September, October. | ||||||||||||
| Starry smooth-hound — seasonal, recorded in May, June, July, August, September. |
Recorded here with no season stated: Pollack.
Safety
Boat safety — Can cause serious injury or death
A twenty-kilometre boulder reef, largely submerged, extending far offshore across the natural line of passage in Cardigan Bay. It has wrecked vessels for centuries, it breaks in a swell, and its shallowest parts are not obvious in calm water.
What reduces it: Treat the sarn as a charted hazard requiring current charts and a plotted route rather than as ground to be found by sounding, and do not cross it in a swell.
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
UK coastal and inland 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.
Cliffs and rock platforms — Can cause serious injury or death
Much of the Ceredigion coast is cliff of glacial till and shale, which slumps without warning rather than weathering gradually. Sheltering at the foot of one from a westerly places a person directly beneath the failure, and the ground above is undercut.
What reduces it: Do not shelter, sit or set up beneath a soft cliff at any time, keep back from the edge above, and use the open beach and dress for it instead.
Worse when:
- After heavy or prolonged rain, when saturated till slumps.
- Where the face is bare and freshly exposed rather than vegetated.
Rules and access
FishingHQ does not know the current access position here. Shore angling in Wales is not rod-licensed, but access rights, landowner permission, local authority and harbour byelaws, national and inshore fisheries measures, and site designations all apply and all change. Check the current position with Natural Resources Wales, the harbour or local authority, and the landowner before going.
Particular to this water: This ground carries conservation designations that constrain access, vehicles, bait collection and disturbance independently of any fishing rule.
Who holds the answer:
- Natural Resources Wales, which administers marine and fisheries regulation in Welsh waters.
- The local authority and, where one exists, the harbour authority, for access, byelaws and shellfish classification.
- Natural Resources Wales, which administers rod licensing, freshwater and migratory fisheries, and conservation designations in Wales.
- The Welsh Government, for sea fisheries measures and marine policy in Welsh waters.
- The fishery owner, estate or angling association, for permission to fish freshwater and migratory beats.
- The relevant site management bodies, where a marine or coastal designation affects access, disturbance or collection.
- The harbour authority at each port, for access to and fishing from harbour structures.
- The local authority and the Food Standards Agency framework, for shellfish harvesting area classification.
Nearby fishing
Other publicly documented places within about 40 km, by distance. Positions are approximate public geography and are never exact marks.
- Pwllheli — 10–25 km · Harbour wall
- Criccieth — 10–25 km · Beach
- Porthmadog and the Glaslyn estuary — 10–25 km · Estuary
- Barmouth and the Mawddach estuary — 10–25 km · Estuary
- Morfa Nefyn — 10–25 km · Beach
- Trefor pier — 10–25 km · Pier
- Porth Ysgaden — 10–25 km · Rock mark
- Aberdaron — 10–25 km · Cove
Sources for this place
- JNCC species and habitat conservation advice — Joint Nature Conservation Committee (Conservation authority)Relied on for: Description, designation and habitat characterisation of the named coastal and marine features of the United Kingdom, and the species characteristically associated with them.States this directlyCitation checked — the work exists and is described correctly
- Cefas science, advice and data on marine and freshwater environments — Centre for Environment, Fisheries and Aquaculture Science (Government fisheries body)Relied on for: Marine environmental science for UK shelf seas: sediment characterisation, estuarine process, shellfish bed distribution, tidal range and the monitoring that describes them.States this directlyCitation checked — the work exists and is described correctly
- Sea Angler — Bauer Media (Specialist angling publication)Relied on for: Long-running published description of British sea angling practice by region, ground type and named mark.FishingHQ's interpretation of what it saysCitation checked — the work exists and is described correctly
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: Widely restated public descriptions of which places are conventionally fished and how, recorded as practitioner consensus rather than as scholarship, and not relied on for access, permission or any current rule.Background and mechanism onlyCitation checked — the work exists and is described correctly
- Met Office shipping forecast, inshore waters forecast and marine warnings — Met Office, United Kingdom (Government fisheries body)Relied on for: That inshore waters forecasts, sea state and swell are the operative inputs for shore and small-craft decisions in these waters.States this directlyCitation checked — the work exists and is described correctly
- British Sea Fishing: Welsh shore marks — British Sea Fishing (Credible secondary source)Relied on for: The mark-by-mark Welsh shore guide: species, bait, season and ground at each named mark.States this directlyPassage read and verified
How FishingHQ labels evidence is explained in the evidence policy. Last reviewed 2026-08-16.