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Displaying items by tag: bottlenose dolphins

A rare sight was caught on camera this past week with the birth of a bottlenose dolphin in Glandore Harbour.

Following reports on Monday (15 April) to the Irish Whale and Dolphin Group (IWDG) of a large gathering near Mizen Head of some 25 bottlenoses — a dolphin species not frequently seen off West Cork — a second similar-sized group was spotted two days later some 60km to the east at Glandore.

Local IWDG member Heather Mahmood flew her drone over the Glandore pod to capture some footage and images, and upon reviewing the results with her daughter Ruá on Thursday evening, the pair were surprised to discover what appeared to be a dolphin giving birth.

After sending the footage and images to the IWDG, sightings officer Pádraig Whooley came to the same conclusion.

“[It appeared] that it was indeed a female either giving birth or in the process of, as the appendage [seen protruding from the dolphin] looked very similar to a tiny, floppy tail fluke,” Whooley said.

“It is known that to maximise the chance of a successful birth, which can be a long process for all mammal species, cetacean calves are born tail-first. This is an adaptation to living in an aquatic environment, as it gives the new born the maximum breathing time inside the birth canal — that first breath being the critical one.”

Whooley referred to the IWDG’s resident experts on bottlenose dolphins, Simon Berrow and Mags Daly of the Shannon Dolphin Project, who were just as astounded.

“Neither of them have ever witnessed the birth of a bottlenose dolphin, despite being involved in monitoring the resident Shannon population now for over 30 years,” Whooley said.

“In fairness, how could they have, as this behaviour could really only be detected from an aerial perspective, which we now have at our disposal.”

The IWDG shared their findings with Cromarty-based Dr Barbara J Chaney, who studies the Scottish bottlenose population that overlaps with our own, “and her thoughts mirrored ours, that this footage was unique, both in a British and Irish context, as this event has never before been seen, let alone recorded,” Whooley added.

See the remarkable video on the IWDG website HERE.

Published in Marine Wildlife

Pregnancies in bottlenose dolphins can now be determined from images captured by drone, according to new research.

As the Irish Examiner reports, marine scientists from University of Aberdeen and Duke University have flown drones over the Moray Firth Special Area of Conservation in Scotland to collect overhead images of dolphin pods.

From these, the researchers believe that by measuring the body width of this protected marine wildlife species, they can determine which dolphins may be with calf.

“Previously, we only knew if female bottlenose dolphins were pregnant if they were later seen with a calf,” said Dr Barbara Cheney of the University of Aberdeen.

“As a result, we only knew about successful pregnancies, and didn’t know how many pregnancies failed or how many calves died before we saw them.”

The Irish Examiner has much more on the story HERE.

Published in Marine Science

Dusty the dolphin last weekend treated two SCUBA diving sisters to an encounter they will never forget, as RTÉ News reports.

Jessica and Jennifer Smith were diving with their father Finbar as part of a group with the Burren Sub Aqua Club last Saturday (1 May) when they were approached by the inquisitive bottlenose, who has been a fixture of the West Clare coast for some 20 years.

Previous encounters have been mixed — in particular an incident reported in Doolin some years ago in which a woman was hospitalised.

But the teens were delighted to meet a much calmer Dusty, who may have been surprised to find humans in the water after months of restrictions prevented group dives.

RTÉ News has more on the story HERE.

Published in Marine Wildlife

Miracle dolphin Spirtle has returned to her home waters in the north-east of Scotland after her summer spent off Ireland’s south-west coast, as BBC News reports.

The bottlenose dolphin with a distinctive sunburn scar was spotted with her family group in the Moray Firth this past Tuesday (17 December) — four months and hundreds of miles away from their last sightings in the waters off Co Kerry.

Spirtle initially surprised marine wildlife experts when she survived a live stranding ordeal in 2016 in which she suffered severe sunburn — and again this past summer when she and a number of her group were tracked heading south from Scotland through the Irish Sea.

A spokesperson for Whale and Dolphin Conservation said 2019 “has been a very unusual year for this dolphin population’s movements around the UK and overseas to the Dutch coast — it might not be quite finished yet”.

In other news, the Irish Whale and Dolphin Group (IWDG) says competition for food “seems to be growing more intense” for fin whales in the waters off Co Waterford, who made a more fleeting visit than usual for this time of year.

Published in Marine Wildlife

Marine wildlife miracle Spirtle appears to have taken up residence off the Kerry coast if the many sightings over recent weeks are anything to go by.

Last month the young dolphin was spotted in the area some weeks after she was seen off the East Coast, headed south from her usual haunt off the west of Scotland.

Indeed, it was there where she live stranded in 2016 and suffered severe sunburn, which left her with her distinctive markings.

Despite fears that she wouldn’t survive her ordeal, Spirtle returned to fine health and is now part of a small pod regularly feeding off Feit in Tralee Bay, and which includes a juvenile, according to the Irish Whale and Dolphin Group (IWDG).

Researchers are now trying to establish if Spirtle became part of this group after her long travels, or whether they swam with her from Scotland.

Initial evidence suggests at least two of her pod are Scottish regulars, including Spirtle’s own mother Porridge.

“We have documented movements of individual bottlenose dolphins between Ireland and Scotland before, but we do not know how often this occurs or whether it is typical behaviour,” the IWDG said.

“We hope to continue to monitor the presence of this famous ‘Scottish’ dolphin and see if she stays or travels further,” the group added.

Published in Marine Wildlife

Nearly two months after she was spotted off the East Coast, Spirtle the dolphin has been filmed frolicking off the shores of Kerry, as the Irish Mirror reports.

The young dolphin is distinctive for the heavy scarring and discolouration on her right flank — caused by severe sunburn wen she live stranded on a Scottish beach in 2016.

Having bounced back from that brush with death, her wounds gradually healing over the years, Spirtle was recently sighted at the lead of a group of bottlenose dolphins that was making its way south along the Irish Sea.

Marine wildlife experts are now trying to establish if this pod has now made it to the Kingdom, as Spirtle was caught on camera by Dr Joanne O’Brien in recent days with around 20 other bottlenose dolphins in Tralee and Brandon bays.

There is no word as yet on whether Spirtle and her colleagues paid a visit to Dingle’s longtime resident dolphin, Fungie.

Published in Marine Wildlife

Sightings of an unusual looking bottlenose dolphin off the East Coast in recent weeks have turned out to be a Scottish scrapper named Spirtle.

Images of the dolphin seen off South Dublin and North Wicklow earlier this month showed what appeared to be heavy scarring and discolouration on its right flank.

That was enough for Dr Joanne O’Brien of the Irish Whale and Dolphin Group (IWDG) to identify the animal as the daughter of a dolphin well known in the Moray Firth.

Spirtle’s story is one of survival as almost three years ago to this day, she was found live stranded with significant injuries and suffering severe dehydration.

Since then she’s bounced right back from the brink of death, and it appears she’s now even at the lead of a group of bottlenose dolphins that’s made its way south along the Irish Sea beyond Dublin Bay.

A rare sighting of a different kind was made in West Cork this past week, where a charter boat operator witnessed what he believed was an attack on a pod of common dolphins by a killer whale.

David Edwards was 15 miles south of Galley Head last Tuesday (21 May) when he saw the orca chase after its fellow cetaceans for its lunch — and his images of the event have been confirmed by IWDG sightings officer Padraig Whooley.

Echo Live has more on the story HERE.

Published in Marine Wildlife

#MarineScience - The Irish Whale and Dolphin Group’s Shannon Dolphin Project is seeking research assistants from May-September 2018 based in Kilrush, Co Clare.

Research assistants will be required to conduct monitoring surveys from dolphin-watching tour boats, spend a considerable amount of time on Shannon Estuary bottlenose dolphin photo identification and related office tasks, and assist in the management of the dolphin centre on a daily basis.

Photo ID training will be provided on the boats and in the office. There will also be the opportunity to help with research conducted on board the IWDG’s research vessels Muc Mhara and Celtic Mist, and to assist the IWDG with cetacean strandings should the opportunity arise.

These positions provide an excellent opportunity to develop skills in marine research and education and to assist with one of the longest-running bottlenose dolphin population monitoring programs in Europe.

There is no monetary compensation for these positions and a contribution of €400 per month towards accommodation and utilities is required.

Volunteers will be expected to work and live as part of a team with shared cooking and cleaning duties. Accommodation will be provided in a shared house within walking distance of the dolphin centre and town of Kilrush. Research assistants are responsible for their own food costs and travel expenses to and from Kilrush.

The closing date for applications is Friday 30 March. However, early application is recommended. Shortlisted candidates will be required to undertake a Skype interview in April. Successful applicants will be notified by mid-April.

Full details on the positions can be found on the IWDG website HERE.

Published in Marine Science

#MarineWildlife - Conservationists want Tralee Bay and Brandon Bay in North Kerry to be declared a protected marine wildlife zone for bottlenose dolphins.

The call comes in the wake of new research by the Irish Whale Dolphin Group (IWDG) in tandem with the Shannon Dolphin and Wildlife Foundation, which has identified the vast majority of bottlenose dolphins in North Kerry as members of the Shannon Estuary group that has enjoyed Marine Protected Area status since 2000.

“We knew dolphins had been regularly observed in Brandon Bay,” said the IWDG’s Dr Simon Berrow of the new research, “but did not know which population they belonged to and had no idea they were as abundant and frequent as this study has shown.”

Stephanie Levesque, senior author of the study, added that the research identified “very high numbers of Shannon dolphins present during the summer months in Brandon and Tralee Bays.

“If further surveys were to be carried out at various times of the year, including collecting behavioural data, it could help us to better understand how they are using these habitats.”

Elsewhere on the West Coast, Galway Bay FM reports on efforts in Connemara to form local groups in Oughterard and Letterfrack which are designated for the protection of pearl mussels.

Published in Marine Wildlife

#MarineWildlife - The 21st year of dolphin research in the Shannon Estuary is off to an amazing start after the first ever dolphin recorded in the estuary was spotted on the Kerry coast.

As the Shannon Dolphin and Wildlife Foundation (SDWF) reports, the dolphin known as 'No 1' was sighted in Brandon Bay on Saturday 25 May swimming in a group of three.

No 1 is happily a familiar sight in the region, having been recorded most years since the project began in 1993.

"It has long been known that Shannon dolphins regularly use Tralee and Brandon Bays but how important the area is in not clear," says the SDWF on its blog. "If we are to protect the Shannon dolphins we need to ensure we identify all their important habitats and extend protection to these areas if necessary."

Meanwhile, its been confirmed that the trio of bottlenose dolphins who took up residence near Bunratty Castle in the spring have been observed in the mainstream of the Shannon Estuary.

The three were spotted on the first monitoring trip of the summer from Kilrush last week by SDWF researchers of Moneypoint.

"This demonstrates again the value of long term monitoring and the power of a photo ID catalogue to monitor the Shannon dolphins," says the SDWF blog.

In other cetacean news, an in-depth discussion of the Shannon's dolphins and the Irish Whale and Dolphin Group's (IWDG) research of bottlenose dolphins around the Irish coastline was broadcast on Derek Mooney's afternoon show on RTÉ Radio 1 recently.

A podcast of the 30-minute segment of Mooney Goes Wild from Friday 31 May is available to download HERE.

Published in Marine Wildlife
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Aquaculture Information

Aquaculture is the farming of animals in the water and has been practised for centuries, with the monks farming fish in the middle ages. More recently the technology has progressed and the aquaculture sector is now producing in the region of 50 thousand tonnes annually and provides a valuable food product as well as much needed employment in many rural areas of Ireland.

A typical fish farm involves keeping fish in pens in the water column, caring for them and supplying them with food so they grow to market size. Or for shellfish, containing them in a specialised unit and allowing them to feed on natural plants and materials in the water column until they reach harvestable size. While farming fish has a lower carbon and water footprint to those of land animals, and a very efficient food fed to weight gain ratio compared to beef, pork or chicken, farming does require protein food sources and produces organic waste which is released into the surrounding waters. Finding sustainable food sources, and reducing the environmental impacts are key challenges facing the sector as it continues to grow.

Salmon is the most popular fish bought by Irish families. In Ireland, most of our salmon is farmed, and along with mussels and oysters, are the main farmed species in the country.

Aquaculture in Ireland

  • Fish and shellfish are farmed in 14 Irish coastal counties.
  • Irish SMEs and families grow salmon, oysters, mussels and other seafood
  • The sector is worth €150m at the farm gate – 80% in export earnings.
  • The industry sustains 1,833 direct jobs in remote rural areas – 80% in the west of Ireland
  • Every full-time job in aquaculture creates 2.27 other jobs locally (Teagasc 2015)
  • Ireland’s marine farms occupy 0.0004% of Ireland’s 17,500Km2 inshore area.
  • 83% of people in coastal areas support the development of fish farming
  • Aquaculture is a strong, sustainable and popular strategic asset for development and job creation (Foodwise 2025, National Strategic Plan, Seafood
  • Operational Programme 2020, FAO, European Commission, European Investment Bank, Harvesting Our Ocean Wealth, Silicon Republic, CEDRA)
    Ireland has led the world in organically certified farmed fish for over 30 years
  • Fish farm workers include people who have spent over two decades in the business to school-leavers intent on becoming third-generation farmers on their family sites.

Irish Aquaculture FAQs

Aquaculture, also known as aquafarming, is the farming of aquatic organisms such as fish, crustaceans, molluscs and aquatic plants, and involves cultivating freshwater and saltwater populations under controlled conditions- in contrast to commercial fishing, which is the harvesting of wild fish. Mariculture refers to aquaculture practiced in marine environments and in underwater habitats. Particular kinds of aquaculture include fish farming, shrimp farming, oyster farming, mariculture, algaculture (such as seaweed farming), and the cultivation of ornamental fish. Particular methods include aquaponics and integrated multi-trophic aquaculture, both of which integrate fish farming and plant farming.

About 580 aquatic species are currently farmed all over the world, according to the UN Food and Agriculture Organisation (FAO), which says it is "practised by both some of the poorest farmers in developing countries and by multinational companies".

Increasing global demand for protein through seafood is driving increasing demand for aquaculture, particularly given the pressures on certain commercially caught wild stocks of fish. The FAO says that "eating fish is part of the cultural tradition of many people and in terms of health benefits, it has an excellent nutritional profile, and "is a good source of protein, fatty acids, vitamins, minerals and essential micronutrients".

Aquaculture now accounts for 50 per cent of the world's fish consumed for food, and is the fastest-growing good sector.

China provides over 60 per cent of the world's farmed fish. In Europe, Norway and Scotland are leading producers of finfish, principally farmed salmon.

For farmed salmon, the feed conversion ratio, which is the measurement of how much feed it takes to produce the protein, is 1.1, as in one pound of feed producing one pound of protein, compared to rates of between 2.2 and 10 for beef, pork and chicken. However, scientists have also pointed out that certain farmed fish and shrimp requiring higher levels of protein and calories in feed compared to chickens, pigs, and cattle.

Tilapia farming which originated in the Middle East and Africa has now become the most profitable business in most countries. Tilapia has become the second most popular seafood after crab, due to which its farming is flourishing. It has entered the list of best selling species like shrimp and salmon.

There are 278 aquaculture production units in Ireland, according to Bord Iascaigh Mhara (BIM) *, producing 38,000 tonnes of finfish and shellfish in 2019 and with a total value of €172 million

There are currently almost 2,000 people directly employed in Irish aquaculture in the Republic, according to BIM.

BIM figures for 2019 recorded farmed salmon at almost 12,000 tonnes, valued at €110 million; rock oysters reached 10,300 tonnes at a value of €44 million; rope mussels at 10,600 tonnes were valued at €7 million; seabed cultured mussels at 4,600 tonnes were valued at €7 million; "other" finfish reached 600 tonnes, valued at €2 million and "other" shellfish reached 300 tonnes, valued at €2 million

Irish aquaculture products are exported to Europe, US and Asia, with salmon exported to France, Germany, Belgium and the US. Oysters are exported to France, with developing sales to markets in Hong Kong and China. France is Ireland's largest export for mussels, while there have been increased sales in the domestic and British markets.

The value of the Irish farmed finfish sector fell by five per cent in volume and seven per cent in value in 2019, mainly due to a fall on salmon production, but this was partially offset by a seven per cent increased in farmed shellfish to a value of 60 million euro. Delays in issuing State licenses have hampered further growth of the sector, according to industry representatives.

Fish and shellfish farmers must be licensed, and must comply with regulations and inspections conducted by the Sea Fisheries Protection Authority and the Marine Institute. Food labelling is a function of the Food Safety Authority of Ireland. There is a long backlog of license approvals in the finfish sector, while the Department of Agriculture, Food and Marine says it is working to reduce the backlog in the shellfish sector.

The department says it is working through the backlog, but notes that an application for a marine finfish aquaculture licence must be accompanied by either an Environmental Impact Statement (EIS) or an Environmental Impact Assessment Report (EIAR). As of October 2020, over two-thirds of applications on hand had an EIS outstanding, it said.

The EU requires member states to have marine spatial plans by 2021, and Ireland has assigned responsibility to the Department of Housing, Planning and Local Government for the National Marine Planning Framework (NMPF). Legislation has been drawn up to underpin this, and to provide a "one stop shop" for marine planning, ranging from fish farms to offshore energy – as in Marine Planning and Development Management Bill. However, the Department of Agriculture, Food and Marine confirmed last year that it intends to retain responsibility for aquaculture and sea-fisheries related development – meaning fish and shellfish farmers won't be able to avail of the "one stop shop" for marine planning.

Fish and shellfish health is a challenge, with naturally occurring blooms, jellyfish and the risk of disease. There are also issues with a perception that the sector causes environmental problems.

The industry has been on a steep learning curve, particularly in finfish farming, since it was hailed as a new future for Irish coastal communities from the 1970s – with the State's Electricity Supply Board being an early pioneer, and tobacco company Carrolls also becoming involved for a time. Nutrient build up, which occurs when there is a high density of fish in one area, waste production and its impact on depleting oxygen in water, creating algal blooms and "dead zones", and farmers' use of antibiotics to prevent disease have all been concerns, and anglers have also been worried about the impact of escaped farmed salmon on wild fish populations. Sea lice from salmon farmers were also blamed for declines in sea trout and wild salmon in Irish estuaries and rivers.

BIM says over 95% of all salmon farmed in Ireland are certified organic. Organically grown salmon are only fed a diet of sustainable organic feed. They are also raised in more spacious pens than traditional farmed salmon. The need to site locations for fish farms further out to sea, using more robust cages for weather, has been recognised by regulatory agencies. There is a move towards land-based aquaculture in Norway to reduce impact on local ecosystems. The industry says that antibiotic use is declining, and it says that "safe and effective vaccinations have since been developed for farmed fish and are now widely used". Many countries are now adopting a more sustainable approach to removing sea lice from salmon, using feeder fish such as wrasse and lumpsucker fish. Ireland's first lumpsucker hatchery was opened in 2015.

BIM says over 95% of all salmon farmed in Ireland are certified organic. Organically grown salmon are only fed a diet of sustainable organic feed. They are also raised in more spacious pens than traditional farmed salmon. The need to site locations for fish farms further out to sea, using more robust cages for weather, has been recognised by regulatory agencies. There is a move towards land-based aquaculture in Norway to reduce impact on local ecosystems. The industry says that antibiotic use is declining, and it says that "safe and effective vaccinations have since been developed for farmed fish and are now widely used". Many countries are now adopting a more sustainable approach to removing sea lice from salmon, using feeder fish such as wrasse and lumpsucker fish. Ireland's first lumpsucker hatchery was opened in 2015.

Yes, as it is considered to have better potential for controlling environmental impacts, but it is expensive. As of October 2020, the department was handling over 20 land-based aquaculture applications.

The Irish Farmers' Association has represented fish and shellfish farmers for many years, with its chief executive Richie Flynn, who died in 2018, tirelessly championing the sector. His successor, Teresa Morrissey, is an equally forceful advocate, having worked previously in the Marine Institute in providing regulatory advice on fish health matters, scientific research on emerging aquatic diseases and management of the National Reference Laboratory for crustacean diseases.

BIM provides training in the national vocational certificate in aquaculture at its National Fisheries College, Castletownbere, Co Cork. It also trains divers to work in the industry. The Institute of Technology Carlow has also developed a higher diploma in aqua business at its campus in Wexford, in collaboration with BIM and IFA Aquaculture, the representative association for fish and shellfish farming.

© Afloat 2020

At A Glance - Irish Aquaculture

  • Fish and shellfish are farmed in 14 Irish coastal counties
  • Salmon is the most popular fish bought by Irish families. 
  • In Ireland, most of our salmon is farmed, and along with mussels and oysters, are the main farmed species in the country.
  • The industry sustains 1,833 direct jobs in remote rural areas – 80% in the west of Ireland
  • Every full-time job in aquaculture creates 2.27 other jobs locally (Teagasc 2015)
  • Ireland’s marine farms occupy 0.0004% of Ireland’s 17,500Km2 inshore area.
  • 83% of people in coastal areas support the development of fish farming

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