As Twinkle said this has been one of the best threads recently.

A big thanks to Creep for keeping the debate well balanced.
I have been in touch with some guys in NPWS and below is the emails as they occurred.
I for one will try to gather as much info as I can this year and send it on to Oliver.
Hi Eamonn,
I am trying to gather some information on harbour seals and grey seals in the greater Dublin area, particularly Dun Laoghaire, Dalkey and Howth.
I am not sure if population counts have been undertaken at any stage. As a boat owner, out and about a lot fishing, photo taking etc I feel that the population is growing but maybe it’s just that the seals are becoming more accustomed to people and approach boats more readily.
Any information you could give me, or even pointers as to where I can get information would be very much appreciated.
Thank You
Pat
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Pat,
Thanks for the query. I'm going to forward it to our seal expert as he may have a much better idea of the specifics of your query.
In any case, most if not all our seal reports are to be found at
http://www.npws.ie/marine/marinereports/Kind regards,
Eamonn
Dear Patrick,
Dr Eamonn Kelly has referred your recent email request on to me.
As he mentioned, detailed information for Ireland is held in a number of seal population reports that are available online (see
www.npws.ie/marine under Marine Reports).
The Department is currently commissioning a repeat survey of the west-south-east of Ireland for Harbour seals (primarily) & Grey seals to take place this coming August. This work should provide summer count updates from 'haul-out' or resting sites along the east coast, including the Dublin area for example.
For Dalkey-to-Howth and the Dublin Bay area: The surveys mentioned above have picked up some seals of both species at Dalkey Island-the Muglins and cliffbound beaches/rocks/gullies around Howth Head (Grey seals only). Both species also use a site on North Bull Island/Sutton Creek but information from this location is very limited.
I am also interested in any additional records/info you might have and I'd be grateful if you could add anything further from the Dublin-Wicklow area or elsewhere.
Kind regards,
Oliver
Dr Oliver Ó Cadhla
Marine mammal ecologist
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Dear Oliver,
Thank you so much for your prompt reply. The background to my query is as follows:-
I am a member on a number of internet based fishing and boating sites where I share info with like minded individuals. Recently a post was put up regarding seals being shot and washed up on Tramore beach in Waterford. This post received mixed reactions, nobody thankfully condoned the shooting, but it appeared from what was said that members in the greater Dublin area had been having problems with seals approaching very close to boats and taking fish off lines as they were being retrieved etc. Nowhere else in the country seems to be having this problem. A lot of info came out about people feeding seals in harbours etc and seal sanctuary people saving injured seals adding to the problem. I had already observed a big increase in this sort of thing in recent years but rather than get led astray by emotional guess work I thought it would be an idea to try and find out more scientific info. I will read the reports as you recommend and will pass on any info I gain to the lads on these websites. I know absolutely nothing about seals other than it is nice to see them on the islands at Dalkey as I go about. I will try to start taking notes of how many I see and when, what tide state etc. If by year end I have managed to gather any worthwhile info I will certainly pass it on to you. If there is any particular info you would like me to gather please let me know.
Thanks again for your help.
Pat
Dear Pat,
Glad to be of help and many thanks for the additional info which is useful to know.
Key information that is handy to collect, in general, if you're going about it:
1. Location name (or Lat/Long or grid reference)
2. Date
3. Time of day (local time)
4. State of tide (e.g., usually represented as time before/after low water: LW+1hr, LW-2hr)
5. No. of Harbour seals (classed as adults/juveniles; on land and/or in water but count separately)
6. No. of Grey seals (classed as adults/juveniles/whitecoat pups; on land and/or in water but count separately)
All the best,
Oliver
Haven't had much time to read the marine reports yet but will be having a look.
Hope this helps in some way.
Yappo