Certifier : 
SAI Global
Certified status : 
Certified since : 
30 Jul 2013
Certificate expires : 
26 Jul 2023


The blue mussel – or Diúilicín in Irish – is a widely distributed bivalve shellfish that adapts to a wide variety of ecological situations. Mussels are filter feeders, feeding on phytoplankton and suspended organic matter in the water column. This reliance on a natural food source, coupled with their general sessile (fixed) nature, makes them ideal for cultivation.

Fishing involves collecting mussels in mid-summer to early autumn and moving them to inshore, protected areas to grow. The mussels are then harvested from licensed and leased beds at any time of the year.

The cross-border certified fishery covers both the Republic of Ireland and Northern Ireland. A total of 37 vessels are licensed to collect seed mussels within permitted harvest areas in Lough Swilly, (Cromane) Castlemaine, Youghal harbour, Waterford harbour, Wexford harbour, Lough Foyle and Carlingford Lough South Shore. These are collected by towing a dredge behind a small boat or, in the case of a few small-scale operators, by using a hand-held rake at low tide. 

The mussels on in underwater cultivation plots by 94 aquaculture permit holders.

Mussel (Mytilus edulis) image © Scandinavian Fishing Year Book