This is one if the most obvious pillboxes in the area, sat in the middle of the beach and at high tides in the water.
As of January 2007 its virtually submerged in sand, last year it was completely uncovered and actually tipped over the other way, see this pic on Freds Photos.
I’m sure it will become uncovered again, its a real display of natural forces at work seeing this thing constantly change.
http://fc08.deviantart.net/fs70/i/2012/124/a/8/bunker_by_xlblaze-d4yhend.jpg
The pill box is almost completely visible now from all angles, but is full of sand
According to the Defence of Britain and The Pillbox Study Group it is a Type FW3/23.