Sea watching at Scarborough: an entertaining experience.
This week I was on holiday in Scarborough at the Grand Hotel, overlooking the South Beach/Bay. One morning I awoke at 4.30am, made a cup of tea, looked out the window to assess the weather, and was amazed to see hundreds, even maybe thousands, of white dots on the shore, half way between the sea wall and the incoming tide, right across the bay. My binoculars identified the white dots as Gulls, but it was still too dark to see much, other than they were just sitting there, presumably resting? As the dawn came up and the tide came in, the Gulls gradually flew off until there were only half a dozen left. These few seemed interested in one particular spot on the beach, from where water was trickling out, down to the incoming tide... I focussed carefully on the spot and saw that water was bubbling out of the sand; the Gulls seemed to be scooping it with their bills, so I presumed it was fresh water.
After breakfast, I walked down to the beach and examined more closely the site of this 'spring'. Water was still bubbling out of the sand, but the tide was flowing inexorably towards the source and would soon overwhelm it. Watching from a distance, I saw the Gulls come back to drink (apparently) and they did so until the sea washed over it; yet, as the wave receded, the trickle appeared again and the Gulls had one more gulp (Gullp?) before the next wave came. I still don't know what this water source was, and can only guess it was a surface water outfall via a pipe buried in the sand.
Can anyone explain what all those Gulls were doing, spread out in a long band across miles of sand? Is this how/where they rest/sleep at night?
And that small spring of fresh water? Would it be natural, or more likely a pipe laid under the sand to drain rain/surface water from land adjoining the beach?
I'd appreciate any information which might satisfy my curiosity!