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Marine Wildlife
A bottlenose dolphin breaks the surface of waters in front of Tarbert Power Station on the Shannon Estuary
The Shannon Estuary’s resident population of bottlenose dolphins could be under threat from plans to transform the area into a green energy hub, a conservation group fears. Plans revealed last month in the final report of the Shannon Estuary Economic…
Image on left shows tooth rake marks on the dorsal fin and anterior peduncle of a male killer whale, and close-up image of the dorsal fin (right) shows damage from rake marks resulting in open wounds
Killer whale mothers provide social support to their sons long after they have their last calf, a new study has found. University of Exeter scientists found that males are protected from other orcas by their “post-menopausal mothers “, who also…
A file photo of an Osprey on a nest
A pair of fish-loving ospreys have bred in Ireland for the first time in almost two centuries on the island of Ireland. Two and “possibly three” chicks have been confirmed in the nest of the pair at an undisclosed location…
Molecular mechanisms that allowed a type of tropical crayfish to become a global invasive species by adapting to colder water have been identified by scientists in Japan. The research is relevant to growing concerns about animal species colonising new habitats…
The IWDG’s Shannon Dolphin Centre in Kilrush
Environmental groups have expressed dismay at the delay of the Marine Protected Areas Bill, as the Irish Examiner reports. The eagerly awaited legislation will now not be published until after the Dáil recess — which has prompted the Fair Seas…
Humpback Whales and a common dolphin in Irish waters
The Irish Whale and Dolphin Group (IWDG) say that "the humpback whales so long a feature of summer in Cork and Kerry didn’t come this year; instead, they are far to the north, off Mayo, Sligo and Donegal, and reduced…
A Basking shark at Malin Head
Researchers have discovered that basking sharks are as warm-bodied as great white sharks, in spite of having a more sedentary lifestyle. An international team led by scientists from Trinity College, Dublin, says the “surprising” discovery has implications for the conservation…
Sample of freshwater crayfish and brown trout killed in the incident at Ballymore Eustace in June 2022
Inland Fisheries Ireland (IFI) has secured a prosecution against Uisce Éireann for pollution of the River Liffey at a water treatment plant in Ballymore Eustace, Co Kildare. At a recent sitting of Naas District Court, Judge Desmond Zaidan convicted Uisce…
Sensitive habitats such as the Kish Bank off the coast of Dublin and Wicklow have no protection in spite of promised legislation, the Irish Wildlife Trust (IWT) has said
Sensitive habitats such as the Kish Bank off the coast of Dublin and Wicklow have no protection in spite of promised legislation, the Irish Wildlife Trust (IWT) has said. The NGO has welcomed the announcement by Minister of State for…
A sample of dead fish from at least 2,000 discovered in the Brownsmills stream in Co Cork
Inland Fisheries Ireland (IFI) is investigating a serious incident near Kinsale in Co Cork in which at least 2,000 fish have died. The fish kill occurred on the Brownsmills stream in Co Cork and spread over a 4-5km stretch, flowing…
The new north-west Irish Sea SPA  “conservation interest” for seabirds, including the Puffin 
An area in the northwest Irish Sea is to be designated as Ireland’s largest ever protected zone for birds. The proposed new special protection area (SPA) will cover over 230,000 hectares and will increase Ireland’s percentage of marine waters protected…
Minister of State for Heritage Malcolm Noonan
Minister of State for Heritage Malcolm Noonan has pledged to find “common ground between fishers, farmers, foresters, NGOs, businesses, scientists and the public” to develop a national restoration plan. He was commenting after MEPs voted to pass the Nature Restoration…
IWDG strandings officer Stephanie Levesque taking samples from the 19m fin whale stranded at Ballinskelligs in Co Kerry
A fin whale found stranded near Ballinskelligs, Co Kerry at the weekend will not be subject to a post-mortem examination to determine its cause of death, the Irish Whale and Dolphin Group (IWDG) has said. The whale was visited by…
The Blackwater bridge on the Munster Blackwater
Water users have been urged to “take precautions” after an outbreak of crayfish plague on the Munster Blackwater catchment. The National Parks and Wildlife Service (NPWS), Inland Fisheries Ireland (IFI), the Marine Institute and independent ecologists are monitoring what they…
Tánaiste Micheál Martin said that “Ireland today joins a growing chorus of countries, scientists, civil society organisations and private companies calling for a precautionary pause of deep-sea mining”
Ireland has supported calls for a “precautionary pause” on deep-sea mining on the international seabed. The “pause” means that no deep-sea mining should take place until a “robust” regulatory framework is in place to protect the marine environment, and until…
A Skellig puffin in nest
Birdwatch Ireland has welcomed a decision to extend marine protection for a North Atlantic sea area outside of Ireland’s exclusive economic zone. The seafloor of the North Atlantic Current and Evlanov Sea Basin (NACES) has been given marine protected area…

Marine Wildlife Around Ireland One of the greatest memories of any day spent boating around the Irish coast is an encounter with marine wildlife.  It's a thrill for young and old to witness seabirds, seals, dolphins and whales right there in their own habitat. As boaters fortunate enough to have experienced it will testify even spotting a distant dorsal fin can be the highlight of any day afloat.  Was that a porpoise? Was it a whale? No matter how brief the glimpse it's a privilege to share the seas with Irish marine wildlife.

Thanks to the location of our beautiful little island, perched in the North Atlantic Ocean there appears to be no shortage of marine life to observe.

From whales to dolphins, seals, sharks and other ocean animals this page documents the most interesting accounts of marine wildlife around our shores. We're keen to receive your observations, your photos, links and youtube clips.

Boaters have a unique perspective and all those who go afloat, from inshore kayaking to offshore yacht racing that what they encounter can be of real value to specialist organisations such as the Irish Whale and Dolphin Group (IWDG) who compile a list of sightings and strandings. The IWDG knowledge base has increased over the past 21 years thanks in part at least to the observations of sailors, anglers, kayakers and boaters.

Thanks to the IWDG work we now know we share the seas with dozens of species who also call Ireland home. Here's the current list: Atlantic white-sided dolphin, beluga whale, blue whale, bottlenose dolphin, common dolphin, Cuvier's beaked whale, false killer whale, fin whale, Gervais' beaked whale, harbour porpoise, humpback whale, killer whale, minke whale, northern bottlenose whale, northern right whale, pilot whale, pygmy sperm whale, Risso's dolphin, sei whale, Sowerby's beaked whale, sperm whale, striped dolphin, True's beaked whale and white-beaked dolphin.

But as impressive as the species list is the IWDG believe there are still gaps in our knowledge. Next time you are out on the ocean waves keep a sharp look out!