The native European flat oyster is depleted throughout its former European range. Ireland still has a number of extant populations some of which are commercially fished but production and productivity is much reduced compared to historic levels.
Crayfish stocks are heavily depleted in Irish waters. This depletion has been driven by over exploitation since the introduction of tangle netting in the 1970s. The restoration potential relies on acquiring better data on crayfish essential habitat, information on migration and stock structure and in managing fishing interactions.
Skates are a branch of the shark family, we sometimes called them flat-sharks. Some of these flat-sharks or skates are extremely rare with Ireland holding some of their last remaining European populations. The main refuges for these species are Tralee and Galway Bay.