Macaronesian white limpet
Fish · Last reviewed 2026-08-25
The lower-shore Macaronesian limpet — and an animal the Canary government files as a subspecies of a British one while the taxonomic register calls it a species of its own.
Safety: tides and being cut off — can cause serious injury or death. One more point applies here.
Contamination and toxins in the catch — Can cause serious injury or death
As a grazing intertidal mollusc it concentrates marine biotoxins and microbiological contamination from the water around it. Marine biotoxins are not destroyed by cooking and no smell or taste test will detect one.
What reduces it: Check the current status of the specific gathering area with the monitoring authority before eating anything taken from it.
Catching Macaronesian white limpet
Everything here on fishing for it. Each entry opens the page behind it.
- Where
- 6 places FishingHQ documents — strongest claim anywhere: established quarry · From the shore
*Patella aspera* Röding, 1798 is the `lapa blanca` of the Canaries, and it lives lower on the shore than the lapa negra it is gathered alongside.
ITS NAME IS AN HONEST DISAGREEMENT BETWEEN TWO GOOD SOURCES. The Canary fisheries directorate's size table writes it `Patella ulyssiponensis aspera` — treating it as a subspecies of the China limpet of European coasts. The World Register of Marine Species carries *Patella aspera* Röding, 1798 as a full accepted species. The peer-reviewed Madeiran shore-angling survey cites exactly that authority.
Both positions are defensible and one is current. A fisheries document is written to regulate rather than to classify, and its taxonomy is often a decade or two behind on purpose, because changing a name in a legal table changes what the law bites on. The accepted name is followed here and the disagreement recorded, because a taxonomic register is the thing that settles names and a size table is not.
WoRMS also carries a *Patella aspera* LAMARCK, 1819, which is unaccepted — the same binomial under a different authority. That is a genuine trap for anybody matching names between sources without checking who published them, and it is the reason the authority is written out in full here rather than trimmed to a tidy binomial.
The directorate sets a minimum size for it and closes limpet gathering for roughly five winter months on every island, with a further summer closure on Fuerteventura alone. As with its neighbour, what is recorded here is that the closure exists and roughly how long it runs — not its dates, and not what anybody may do.
How it is caught
Where Macaronesian white limpet is documented
Places where public sources describe this species as fished, with how it is fished and how strongly the evidence supports it. This is not a range map and it is not a recommendation — it is what has been written down about a fishery rather than a record of any individual catch, and being listed is never permission to fish.
Canary Islands
6 documented places
Gran Canaria
Island
Established quarry
From the shore
Fuerteventura
Island
Established quarry
From the shore
La Palma
Island
Established quarry
From the shore
La Gomera
Island
Established quarry
From the shore
El Hierro
Island
Established quarry
From the shore
La Graciosa
Island
Established quarry
From the shore
What these strengths mean
- Established quarry
- Fishing sources describe this as a normal local target here, not merely as caught.
Identification
No photograph of Macaronesian white limpet has passed identity review yet, so none is shown. FishingHQ publishes a species photograph only once somebody has confirmed the animal in it against the species record’s own diagnostic features.
- Scientific name
- Patella aspera
- Family
- Patellidae
- Water
- Saltwater
- Conservation status
- Not assessed
- Regions
- Western Europe, West Africa
- A conical limpet shell, paler than the lapa negra, with strong radiating ribs giving a roughened margin.
- Lower on the shore than Patella candei, and generally in wetter, more surge-washed positions.
- The Canary directorate sets a minimum shell size for it; the figure is the authority's to state.
- Reliable separation from the other Macaronesian limpets needs the shell interior and the foot, which means lifting the animal.
- The binomial needs its authority attached: Patella aspera Röding, 1798 is the accepted species; Patella aspera Lamarck, 1819 is a different and unaccepted usage of the same two words.
Size
- Typical
- 3–6 cm shell length
- Large
- Over 7 cm
Exceptional: Reported to reach a larger size than the lapa negra where it is not heavily gathered, which is part of why the directorate's published minimum is the same for both animals for different reasons.
Lifecycle and reproduction
Planktonic larvae settle onto rock and the animal is then sedentary for life, growing slowly and living many years. Protandry operates as it does across the patellid limpets, so the largest individuals are disproportionately female and a shore stripped of its biggest animals loses its breeding stock rather than a slice of its population.
Broadcast spawning into the water, concentrated in the colder part of the year. The Canary winter closure covers that period on every island in the archipelago, which is the shape a spawning closure takes.
Feeding and senses
Grazes microalgae and biofilm from rock on a wet or rising tide, returning to a home scar. Its lower position on the shore means it is wetted for more of the tidal cycle and grazes for longer than the limpets above it.
Light-and-shadow perception at the tentacle bases, chemoreception for homing along its own mucus trail, and a powerful clamp reflex on contact that makes removal difficult and usually damaging.
Through the year
Sedentary year-round, with feeding governed by tide and wave wetting rather than season. The seasonal fact that matters is legal rather than biological: gathering is closed for roughly five winter months across the Canaries and for a further summer period on Fuerteventura.
Distribution
Macaronesian and adjacent north-east Atlantic, on intertidal and shallow subtidal rock. Regulated by the Canary fisheries directorate across all eight of its islands, and recorded by name in a peer-reviewed survey of Madeiran shore-angling catches.
This is a biological range — where the species occurs, not a prediction that you will catch one. To browse the fishing geography FishingHQ holds, start at fishing places.
Why anglers care
Gathered for the table and taken by shore anglers alongside their fishing across Macaronesia. It occupies the lower shore, so it is reachable for less of the tide than the lapa negra — which makes it both harder to gather safely and more exposed to being taken by whoever gets there on the biggest springs.
Handling and returning
A limpet prised at unsuccessfully usually dies. Decide before lifting whether the animal is being taken. The ribbed shell margin is sharp enough to cut a hand that slips off a clamped animal. Before eating anything gathered here, ask the local food safety or environmental health authority about the specific area — a different body from the fisheries directorate that sets the size and the season.
Safety
Contamination and toxins in the catch is set out at the top of this page, where it cannot be missed.
Tides and being cut off — Can cause serious injury or death
This animal lives low on the shore, so gathering it means going down to the water's edge on a falling spring tide and working while the sea comes back. Macaronesian platforms shelve into deep water with no shallow margin and take unannounced swell.
What reduces it: Work a tide you have looked up rather than one you have judged, watch the sea rather than the rock, keep an escape route behind you at all times, and leave long before you think you need to. A set of swell on a lava platform does not give a second warning.
Check the rules before you fish
Fishing laws, bylaws, access rules, seasons, bait restrictions and permitted methods vary by location and can change. Check the current rules from the relevant authority and the water you intend to fish before fishing.
Check with:
- Current national or regional law for where you are fishing
- Current local bylaws
- The relevant fisheries authority
- The landowner, club or fishery whose water it is
- Any restrictions specific to the species or the method you intend to use
Where to go next
Similar and related fish
Where it lives
More fish
Not related to this page — just the rest of the section. There is little else joined to this subject yet, and a short page should still lead somewhere.
Sources and evidence
- WoRMS — the World Register of Marine Species — WoRMS Editorial Board, hosted by the Flanders Marine Institute (VLIZ) (Scientific institute)Relied on for: The accepted name, naming authority, taxonomic status and family for Patella aspera.States this directlyPassage read and verified
- Tallas mínimas de captura — Canarias: minimum landing sizes and closed seasons — Gobierno de Canarias, Consejería de Agricultura, Ganadería y Pesca — Dirección General de Pesca, with the Grupo de Acción Costera de Tenerife and the Cabildo de Tenerife (Government fisheries body)Relied on for: That this animal is regulated recreational shore-gathering quarry in the Canary Islands, the Canarian common name the directorate gives it, and the existence and shape of the closed seasons it states.States this directlyPassage read and verified
- Importance of recreational shore angling in the archipelago of Madeira (northeast Atlantic) — Scientia Marina (CSIC), vol. 84 no. 4, 2020 (Scientific literature)Relied on for: That this animal is recorded in the recreational shore-angling catch of the Madeira archipelago, at 2.91% for limpets of the estimated total by the study's own catch-composition table.States this directlyPassage read and verified
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: The widely restated practitioner account of how this animal is gathered — the ground, the state of tide, and the tools used.Background and mechanism onlyCitation checked — the work exists and is described correctly
Why the 3 connections on this page are here, and the sources
Similar and related fish
Backed by research — 1 connection
Supported by peer-reviewed research or fisheries science. The sources are listed and can be checked.
Canary black limpet
Patella aspera Röding, 1798 and Patella candei A. d'Orbigny, 1840 are both accepted Macaronesian species, gathered together under the names lapa blanca and lapa negra. The white limpet is paler, more strongly ribbed and lower on the shore; the black limpet is darker and higher. Reliable separation needs the shell interior and the foot, which means lifting the animal — an act that kills it if it is then left.
- WoRMS — the World Register of Marine Species — WoRMS Editorial Board, hosted by the Flanders Marine Institute (VLIZ) (Scientific institute)Relied on for: The accepted names, naming authorities, taxonomic status, synonymy and families that separate these animals from one another.States this directlyPassage read and verified
How it is caught
What experienced anglers do — 1 connection
Widely and independently recommended by experienced anglers and specialist sources. This is real angling knowledge, not proof: controlled evidence for it is limited, and FishingHQ records it as convention rather than as a demonstrated effect.
Gathering winkles, whelks and limpets
Gathered by hand at low water alongside the lapa negra and recorded with it in Madeiran shore-angling catches. Because it sits lower on the shore it is reachable for less of the tidal cycle, which concentrates gathering onto the largest spring tides and onto the least forgiving part of the platform.
- Importance of recreational shore angling in the archipelago of Madeira (northeast Atlantic) — Scientia Marina (CSIC), vol. 84 no. 4, 2020 (Scientific literature)Relied on for: That Madeiran shore anglers collect intertidal invertebrates alongside their fishing, which animals they collect, and their use of previously caught bait.States this directlyPassage read and verified
- General angling website restatements of established technique — Various (Credible secondary source)Relied on for: The widely restated practitioner account of how this animal is gathered and used.Background and mechanism onlyCitation checked — the work exists and is described correctly
Where it lives
Official guidance — 1 connection
Stated by a fisheries authority, scientific institute or recognised angling body. Authoritative, but summarising rather than demonstrating.
Mudflats and intertidal sandflats
A sedentary intertidal grazer occupying the lower, wetter, more surge-washed band than the lapa negra it is gathered beside, and regulated with it by the Canary fisheries directorate. Its zonation is the reason gathering it is more dangerous rather than merely harder.
- Tallas mínimas de captura — Canarias: minimum landing sizes and closed seasons — Gobierno de Canarias, Consejería de Agricultura, Ganadería y Pesca — Dirección General de Pesca, with the Grupo de Acción Costera de Tenerife and the Cabildo de Tenerife (Government fisheries body)Relied on for: That this animal is regulated recreational shore-gathering quarry across the Canary Islands, and the Canarian name the directorate gives it.States this directlyPassage read and verified
How FishingHQ labels evidence is explained in the evidence policy.