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Saturday, October 12, 2013

Professor Tom Doyle On Jellyfish In Cork

Dr Thomas Doyle Cert. Science, BSc, PhD, a Research Fellow at the Coastal and Marine Research Centre of the Environmental Research Institute at University College Cork gave an educational talk at the 2013 Global Open Water Swimming Conference.

Among other things, he has spent time putting tags on jellyfish off the Irish Sea. "It was not an easy thing to do."

His talk gave the educational basics of jellyfish.

There are 4 types of stinging jellyfish. The scyphozoans, the box jellyfish, the hydromedusae that have hundreds of species most smaller than 10 mm in size, and the siphonophores that look like a long frayed rope but it also includes the Portuguese man o war.

Jellyfish include a bell, the tentacles, and the oral arms, but different waters have different jellyfish. "What are the species you will find in the waters that you will encounter? This is the information that swimmers are interested in.

Jellyfish are not randomly distributed. Jellyfish are found in key places. For example, the Lion's Mane is located in the northern parts of the Irish Sea and the compass down towards the south. And not all jellyfish form aggregations. Jellyfish species do different things. Some move up and down and some stay at the same level. And they grow over time. They are small in the winter and autumn when the jellyfish are much smaller.

There is evidence that jellyfish populations are unceasing, but there are locations where they are decreasing or are stable. The media talks about the growth of jellyfish around the world, but it is not a global phenomena. Jellyfish are a part of the marine ecosystem. They prey on things and are eaten by others
." Copyright © 2013 by Open Water Swimming

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Open Water Swimming Magazine

The Open Water Swimming Magazine is the monthly magazine entirely focused on open water swimming heroes and heroines of every age, ability, and background. Published by the World Open Water Swimming Association, the Open Water Swimming Magazine is a free benefit to WOWSA members.

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The Other Shore follows world record holder and legendary swimmer Diana Nyad as she comes out of a thirty-year retirement to re-attempt an elusive dream: swimming 103 miles non-stop from Cuba to Florida without the use of a shark cage. Her past and present collide in her obsession with a feat that nobody has ever accomplished. At the edge of The Devil’s Triangle, tropical storms, sharks, venomous jellyfish, and one of the strongest ocean currents in the world, all prove to be life-threatening realities. Timothy Wheeler’s documentary brings Diana Nyad’s extraordinary adventure to life as Diana sets out to prove that will and determination are all you need to make the unimaginable possible.

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