A submerged vertical cliff some 800 metres below the sea surface and carpeted in coldwater coral has been discovered.

Irish marine scientists have discovered a new coldwater coral habitat some 300km off the Kerry coastline. A submerged vertical cliff some 800 metres(...)

The Marine Institute has recommended that offshore salmon farms should be capped at production of 7,000 tonnes. Photograph: Getty Images/Hemera

Bord Iascaigh Mhara (BIM) plans for a 15,000-tonne offshore organic fish farm in Galway Bay are in doubt, following new size guidelines published by t(...)

Image of a 3D animation of a  3.7km high underwater mountain, which is more than 140km long, on the Charlie-Gibbs Fracture Zone on the Mid-Atlantic Ridge. The image is part of a survey of the Atlantic Ocean conducted by the State’s research ship, the MV Celtic Explorer.   Photograph: Marine Institute

Footprints of icebergs moving across the seabed, an ancient glacial moraine and a mountain higher than Carrauntoohil in Co Kerry have been mapped acr(...)

Boarfish: “a special gift from a warming ocean”. Illustration: Michael Viney

A rather pretty little fish with quite the wrong name keeps swimming into my attention. “Boarfish” isn’t at all what Linnaeus had in mind in coining C(...)

Irish marine research vessel RV Celtic Explorer has been deployed from Newfoundland to map the seafloor between Canada and Ireland.

Irish marine research vessel RV Celtic Explorer has been deployed from Newfoundland to map the seafloor between Canada and Ireland under a new Europea(...)

Prince Charles on the Burren shakes hands with local farmer Oliver Nagle with his father Pat (right) during his visit to the locality. Photograph: Getty Images

Some 24 hours after the historic handshake and private meeting with Sinn Féin leader Gerry Adams, Britain’s Prince Charles is due to visit Mullaghmore(...)

Britain’s Prince Charles with Sinn Féin’s Gerry Adams. Photograph: Sean Curtin Fusionshooters 3:51

Sinn Féin president Gerry Adams has claimed he had a meeting of minds while talking to Prince Charles about lives lost in Northern Ireland’s 30-yea(...)

Britain’s Prince Charles and his partner Camilla Parker-Bowles will visit Mullaghmore harbour, where the prince’s great-uncle Lord Louis Mountbatten died in an IRA bombing almost 36 years ago. File photograph: Jeff J Mitchell/Reuters

Britain’s Prince Charles and Duchess of Cornwall Camilla Parker Bowles begin their four-day trip to Ireland on Tuesday with a visit to NUI Galway’s (N(...)

Britain’s Prince Charles and his wife Camilla, Duchess of Cornwall leave Westminster Abbey after attending a thanksgiving service on Sunday. Photograph: Suzanne Plunkett/Reuters

Security checks have been carried out on a fishing village in the west in preparation for visit by British royalty.Gardaí have spent recent weeks chec(...)

 Prince Charles.

Britain’s Prince Charles will visit the Sligo harbour of Mullaghmore, where his great-uncle Lord Louis Mountbatten died in an IRA bombing in 1979, dur(...)