Dublin is a coastal city, and for over half of my time living in Dublin, I've lived less than ten minutes' walk from the sea. And I grew up in a seaside town.
I also work beside the sea, and when the weather is good I like to spend my lunch hours reading in a small cove behind one of the piers, looking out at the sea (when I can look up from my Kindle). If the tide is out far enough, I walk out as far as I can on the little jetties and the piles of rock and sit right at the edge of the water.
There is nothing so rejuvenating in the middle of a working day. To sit in a quiet spot where the traffic is drowned out by the sound of the waves, looking at the huge sweep of Dublin Bay, listening to the gulls.
My father was a marine engineer, who spent his life either at sea, or making sure other people could go to sea. His grave is close to the Dublin mountains, and they asked us whether we wanted him buried in a grave that faced the mountains, or a grave that faced the city and the sea. It was an easy choice, and I like to imagine him watching over the boats that come in and out, as he did when he was alive.
So you could say the sea is important to me. I love living close to it, and if I didn't live close to it, I would want to travel to it as often as possible.
But here's the weird bit - I can't swim :)