Dr Dick Feely, senior scientist with the US National Oceanic and Atmospheric Administration.

A global expert on ocean acidification has urged Ireland to become involved in monitoring its potential impact on the State’s multimillion-euro seaf(...)

Noise pollution  can transmit across thousands of square kilometres of ocean, causing physical injury, disorientation and death to whales and dolphins. Photograph: Simon Duggan/Provision

Whale and dolphin activity on Ireland’s continental shelf is being measured off the west coast this week by a 21-metre yacht known to be one of the (...)

Tracked across the Atlantic: bluefin tuna. Illustration:  Michael Viney

Once it was just binoculars. Then hidden cameras and infrared video. Today, keeping an even closer eye on nature, computerised mini electronics and sp(...)

The giant box crab: some are occasionally caught in shallow fishing trawls. Illustration: Michael Viney

A windowsill lined with the bones of the beachcombed dead may be the devil to keep dusted, but its ossuary oddities still beg to be picked up, howe(...)

Impression of the sub-sea observatory at the Galway Bay test site, connected back to shore by a cable which has already been installed. Photograph: SmartBay

A sub-sea observatory is due to be installed in Galway Bay when weather permits, as part of a significant development of the State’s ocean energy tes(...)

Francis Flannery and James Riordan: identified deficiencies in existing seabed survey software they believed they could fix
New innovators: SonarSim

James Riordan and Francis Flannery became hooked on the underwater world of seabed surveying while working as researchers at the marine robotics resea(...)

The LÉ ‘Niamh’ is sailing today to begin Mediterranean rescue duty. Photograph: Defence Forces/PA Wire

Naval Service vessel LÉ Niamh is due to sail from Cork harbour today for humanitarian search and rescue duty in the Mediterranean. The patrol ship, un(...)

Minister for the Marine Simon Coveney should take a “leadership” role in State management of fragile habitats, Coastwatch has said. Photograph: Eric Luke

Environmental organisation Coastwatch has called on Minister for the Marine Simon Coveney to take a “leadership” role in State management of fragile(...)

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(...)