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Lecture: “Secrets of the Basking Shark-in Search of a Sea-Monster”

11th January 2020
A basking shark photographed off Malin Head, Co. Donegal A basking shark photographed off Malin Head, Co. Donegal Photo: Irish Basking Shark Study Group

The Friends of Glenua 2019/20 Winter Lectures, in aid of the RNLI, resumes on Thursday 16 January at the Poolbeg Yacht & Boat Club, Dublin.

An entry contribution of €5 is in aid of the RNLI and the subject of the lecture is: “Secrets of the Basking Shark-in search of a sea-monster”

The speaker is Emmett Johnston.

The basking shark is the second largest shark in the world, growing to almost 11 metres and weighing up to 4 tonnes. With huge gaping mouth and lethargic surface swimming behaviour, this giant creature is often seen in Irish waters during summer months.

Having a liver yielding up to 400 gallons of valuable oil, basking sharks were slaughtered in their thousands in Ireland for over a 200 years. Now they are little more than a curiosity for fishermen and sailor alike but mysteries abound. Where, for instance, do they go in winter?

In the last decade, Irish marine scientists have pioneered the hunt for solutions with new research methods and unthreatening technologies, such as pop-up electronic tags and satellites. They have uncovered new truths about one of the world’s most elusive creatures, a true oceanic citizen, an animal that carries no passport and respects no boundaries.

Emmett Johnston is an ecologist with the National Parks and Wildlife Service, and a co-founder of the Irish Basking Shark Study Group. Since 2009 he has led the development of basking shark centred research, conservation and community initiatives in Irish and International waters. He is also an active member of the Irish Whale and Dolphin Group.

In his lecture, Emmett will tell the story of Ireland’s long relationship with this iconic marine creature and how recent advances in marines science are helping marine ecologists to gain new insights into how animal behaviour studies can inform the conservation of our natural world.

Published in Dublin Bay
Jehan Ashmore

About The Author

Jehan Ashmore

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Jehan Ashmore is a marine correspondent, researcher and photographer, specialising in Irish ports, shipping and the ferry sector serving the UK and directly to mainland Europe. Jehan also occasionally writes a column, 'Maritime' Dalkey for the (Dalkey Community Council Newsletter) in addition to contributing to UK marine periodicals. 

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Dublin Bay

Dublin Bay on the east coast of Ireland stretches over seven kilometres, from Howth Head on its northern tip to Dalkey Island in the south. It's a place most Dubliners simply take for granted, and one of the capital's least visited places. But there's more going on out there than you'd imagine.

The biggest boating centre is at Dun Laoghaire Harbour on the Bay's south shore that is home to over 1,500 pleasure craft, four waterfront yacht clubs and Ireland's largest marina.

The bay is rather shallow with many sandbanks and rocky outcrops, and was notorious in the past for shipwrecks, especially when the wind was from the east. Until modern times, many ships and their passengers were lost along the treacherous coastline from Howth to Dun Laoghaire, less than a kilometre from shore. 

The Bay is a C-shaped inlet of the Irish Sea and is about 10 kilometres wide along its north-south base, and 7 km in length to its apex at the centre of the city of Dublin; stretching from Howth Head in the north to Dalkey Point in the south. North Bull Island is situated in the northwest part of the bay, where one of two major inshore sandbanks lie, and features a 5 km long sandy beach, Dollymount Strand, fronting an internationally recognised wildfowl reserve. Many of the rivers of Dublin reach the Irish Sea at Dublin Bay: the River Liffey, with the River Dodder flow received less than 1 km inland, River Tolka, and various smaller rivers and streams.

 

At A Glance – Dublin Bay

The Bay is a C-shaped inlet of the Irish Sea and is about 10 kilometres wide along its north-south base, and 7 km in length to its apex at the centre of the city of Dublin; stretching from Howth Head in the north to Dalkey Point in the south

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