The area on Clontarf where I walked was along the seafront or estuary-front. The tide was out so unfortunately you could see quite a level of rubbish in the silt. I saw one bird passing plastic items which can harm birds. Not nice.
On my way back to the car I spotted a bin overflowing with rubbish.
Clontarf - Nice...
A wonderful place
Great facilities - Tennis, Beach, Golf, Parks, Cricket, Rugby, Gyms.
Shops, Pubs and takeaways - all within walking distance.
Schools - some of the best in Ireland.
A mix of established families and new arrivals.
There are several public transit options for getting to and from Clontarf. I really like the shoreline. There is a linear park there that has random exercise equipment along the way. There are some other parks and restaurants around. Accommodations wise, I think the Clontarf Castle is the closest castle hotel to Dublin city centre. Pretty nice!