Fishing industry representatives will meet Taoiseach Micheál Martin this afternoon ahead of the annual EU quota negotiations.
The Seafood Ireland Alliance said the sector is facing an estimated €94 million reduction in quota cuts next year.
Aodh O'Donnell of the Irish Fish Producers Organisation said total losses could reach €200m when processing, logistics, and export value are included.
Mr O’Donnell said the meeting with the Taoiseach "now is vital to ensure the EU sees Ireland’s united position".
He said a looming economic shock puts coastal communities and the national seafood supply chain "at immediate risk".
Dominic Rihan of the Killybegs Fishermen’s Organisation said the alliance welcomes this first engagement with the Taoiseach.
"It shows Government understands the urgency and is ready to support a national response. A united front gives Ireland the best chance to protect our seafood industry."
EU fisheries ministers will attend the next Fisheries Council meeting on 11 and 12 December, where 2026 fishing quotas will be agreed.
Brendan Byrne of the Irish Fish Processors and Exporters Association described the meeting as the most important moment of the year for EU fisheries.
"It sets the final quotas that determine the future of coastal economies, the viability of vessels, and the health of seafood processing for the year ahead," he said.
Mr Byrne said: "For Ireland, this council will decide whether the proposed €94 million in cuts are fully imposed or whether a fairer outcome can be achieved."
The International Council for the Exploration of the Sea (ICES) whose scientific advice on stock status is used by the EU to set fishing quotas, has recommended a 70% reduction in the EU’s mackerel quota next year, a 41% reduction in the blue whiting quota and a 22% reduction in the boarfish quota.
Some non-EU coastal states have set their own mackerel quotas over the past few years, known as unilateral quotas.
The ICES advice said the sum of the "unilateral quotas for mackerel has resulted in catches that have exceeded the scientific advice by, on average, 39% since 2010".
Patrick Murphy of the Irish South and West Fish Producers Organisation said the proposed quota cuts will hit Ireland harder than any other EU member state.
The Irish fishing sector will be calling for the implementation of the Hague Preferences, a provision within the EU’s Common Fisheries Policy that grants Ireland a larger share of certain stocks when total allowable catches fall below a specific level.
John Lynch of the Irish South & East Fish Producers Organisation said the Seafood Alliance will press for full application of the Hague Preferences.
The Seafood Ireland Alliance was formed last year when a coalition of fishing and fish processing bodies joined forces to advocate for the industry.
