limestone cliffs and stack rocks amid a turquoise sea on the pembrokeshire coast, wales near castlemartin

amid arch bay beach bridge britain carboniferous castlemartin cave cliff cliffs clouds coast coastline cove dyfed early green guillemots gull landscape limestone lush national nature nest ocean park path peaceful pembrokeshire raverbill rock rocks sand sandstone scenery scenic sea serene shore stack summer tide tourism tranquil travel turquoise unique vegetation wales water waves welsh wild