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Posts by Jaz Harker

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MSc by Res opportunity - developing behavioural indicators to inform killer whale conservation with
@exeter.ac.uk @whaleresearch.bsky.social @seadocsociety.bsky.social

People from underrepresented groups in marine science encouraged to apply.

Deadline 19Dec

www.exeter.ac.uk/study/fundin...

6 months ago 29 21 1 3
Humpback whales bubblenet feeding with gulls circling overhead

Humpback whales bubblenet feeding with gulls circling overhead

A killer whale calf breaching in front of forested mountains and hills

A killer whale calf breaching in front of forested mountains and hills

Last weekend was a delightโ€”I observed my first bubble net feeding humpback whales and got to see the AD8s and AJs! (Resident pods of killer whales)

9 months ago 40 3 3 0
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Hourglass #dolphins escort the #RRSSirDavidAttenborough out of #SouthGeorgia waters. #biopole2 #nature #marinebiology @bas.ac.uk @biopole.bsky.social

1 year ago 38 8 3 0
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Seals avoid an operating tidal turbine Authors of a recently published study discuss how their research discovered that seals exhibit avoidance of turbines during operation. This finding is important for industry developers and regulatoโ€ฆ

See our blogpost on tracking seals around a tidal turbine using the new multibeam sonar processing modules in PAMGuard: appliedecologistsblog.com/2025/02/06/s...

1 year ago 3 3 0 0
Image of a dead Oysteratcher on the sand alongside the wording: Please report sightings of dead birds. Image credit: Dawn Balmer/BTO.

Image of a dead Oysteratcher on the sand alongside the wording: Please report sightings of dead birds. Image credit: Dawn Balmer/BTO.

โš ๏ธ A reminder to please report all sightings of dead birds for possible testing for Avian Influenza. In England, Wales & Scotland, contact Defra, in Northern Ireland contact @daera-ni.gov.uk & in Republic of Ireland gov.ie. Please ALSO report them to @birdtrack.bsky.social. Thank you. #UKBirding

1 year ago 61 59 2 2
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Coils of Birch bark - likely originating from North America and has ridden a combination of winds and currents to cross the Atlantic.
County Clare, Ireland.

1 year ago 31 4 1 0
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A couple of bull Atlantic Grey Seals keeping an eye on proceedings in a choppy Bressay Sound, #Shetland this morning.

#MarineLife #MarineMammals

1 year ago 85 4 0 0
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Images of prehistoric cephalopod shells preserved in ancient delta deposits.
County Clare, Ireland.

1 year ago 85 17 1 2
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Dreaming of dreamy summer #fieldwork surveys with bowriding common dolphins ๐Ÿฌ๐ŸŒž

1 year ago 5 1 0 0
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Seals exhibit localised avoidance of operational tidal turbines The result showing that seals exhibit avoidance of the turbine during operation is important for industry developers and regulators, as lower numbers of seals close to the turbine reduces the potenti...

๐Ÿฆญ๐Ÿ” New paper alert in @jappliedecology.bsky.social! I'm excited to share my 1st first author paper, showing how seals avoid tidal turbines when they're operating! doi.org/10.1111/1365... ๐Ÿงต

@seamammalresearch.bsky.social

1 year ago 33 17 1 2
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๐Ÿคฏ "perhaps most great whales have an unrecognized potential for great longevity that has been masked by the demographic disruptions of industrial whaling. This unrecognized longevity has profound implication for basic biology and conservation of whales." Astonishing stuff.

1 year ago 46 12 1 0
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Killer whale (Orcinus orca) occurrence in Icelandic waters revealed by passive acoustic monitoring The distribution and occurrence of killer whales around Iceland are primarily studied in coastal herring grounds, with limited knowledge beyond these areas. This study employed opportunistic passive ...

๐Ÿ”” NEW PAPER ๐Ÿ””
Our latest paper is out, led by our student Giulia Bellon, using passive acoustic monitoring to investigate the occurrence of killer whales in Icelandic waters. You can read all about it (open access) here: onlinelibrary.wiley.com/doi/10.1111/...

1 year ago 45 14 1 1
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Folks! I'm super excited to share a new humpback whale paper by my colleague Martin van Aswegan (not on Bsky)... ๐Ÿ‹๐Ÿ‹
He does some incredible work-
go read his awesome paper! doi.org/10.1113/JP28...

1 year ago 15 1 0 0
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Great to be back doing fieldwork this weekend surveying grey seal pups. Scottish winter weather at its finest! ๐Ÿฆญ๐Ÿด๓ ง๓ ข๓ ณ๓ ฃ๓ ด๓ ฟ

1 year ago 1 0 0 0
Map of the Falkland Islands, southwest Atlantic, showing key coastal sites in the north, and a red box in the northeast showing where the satellite tags were deployed on southern right whales in July 2022.

Map of the Falkland Islands, southwest Atlantic, showing key coastal sites in the north, and a red box in the northeast showing where the satellite tags were deployed on southern right whales in July 2022.

Southern right whale swimming in coastal Falkland Islands waters. Image: Falklands Conservation

Southern right whale swimming in coastal Falkland Islands waters. Image: Falklands Conservation

The #Falkland Isl are a high-use, critical habitat for southern right #whales! ๐Ÿณ Our new paper w Falklands Conservation studies local #whale habitat use & long-range movements @bas.ac.uk @hslesser.bsky.social #MarMam

Ten whales were satellite tagged in July 2022 1/3

www.int-res.com/articles/esr...

1 year ago 39 9 2 1
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Another super day with #Orcas - this time with the 65s pod off Muckle Roe, #Shetland. Adult bull 'Busta' was with them and as spectacular as ever. We first documented him in 2005 when he was a fully grown bull and we estimate him to be at least 40 years old. #MarineLife #MarineMammals #CetaceansUK

1 year ago 222 37 6 3
A pair of Scottish red deer, with antlers, walk across a snowy tundra, with clouds and mountains in the background

A pair of Scottish red deer, with antlers, walk across a snowy tundra, with clouds and mountains in the background

For #TwosDay a pair of red deer in the Cairngorms, Scotland's plateau of #artic alpine environment
#naturephotography

1 year ago 7 1 0 0
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Scientists baffled as orcas seem to revive an 80s trend: dead salmon hats At least one of the marine mammals was recently spotted in Washington wearing the multipurpose fishy accessory

It was acceptable in the 80s ๐ŸŸ
Orca fashions come back around as a pod in Puget Sound pick up an old habit of carrying dead salmon on their heads

It's perhaps a kind of orca trail mix to snack on during long journeys, but orca experts don't know for sure
๐Ÿฆ‘๐Ÿงช
www.theguardian.com/us-news/2024...

1 year ago 72 17 6 6
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Young Grey Seal pups, now independent, are roaming around the Isle of May enjoying their new found freedom as the blog explains: isleofmaynnr.wordpress.com Photo by Chiara Zorn

1 year ago 17 3 1 0
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UK PhD stipends have not been increasing in line with the national minimum wage, and since the generous COVID increase havenโ€™t even bothered to be anchored against an inflation metric. Iโ€™m lucky enough to have a spouse to support me but in what world is this not a barrier to entry for others?

1 year ago 30 10 3 2
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Direct hearing measurements in a baleen whale suggest ultrasonic sensitivity Predicting and mitigating the impacts of anthropogenic ocean noise on marine animals is hindered by a lack of information on hearing in these species. We established a catch-and-release program to tem...

New research from the NMMF, the Norwegian Defence Research Establishment and LKARTS-Norway shows #minke whales can hear sound frequencies as high as 45-90 kHz, higher than previously believed and one of the first real-world measurements of hearing in baleen whales. www.science.org/doi/10.1126/...

1 year ago 2 2 0 0
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๐Ÿงต An absolute monumental effort yesterday with BDMLR (British Divers Marine Life Rescue) in an attempt to rescue this live stranded juvenile minke whale at Balmedie ๐Ÿด๓ ง๓ ข๓ ณ๓ ฃ๓ ด๓ ฟ

#marinelife #ukwildlife #scicomm #minkewhale #whale

1 year ago 73 9 3 0