Pembrokeshire used for farming, compared with 60 per cent for Wales as a whole. Pembrokeshire has a number of seasonal seabird breeding sites, including for razorbill, guillemot, puffin and Manx shearwater, and rare endemic species such as the red-billed chough. Grassholm Island has a large gannet colony. The county's wildlife is diverse, with marine, estuary, ancient woodland, moorland and farmland habitats all within the county. An appeal for otter sightings in 2014 yielded more than 100 responses. Seals, whales, dolphins and porpoises can be seen frequently off the Pembrokeshire coast. Pembrokeshire has numerous prehistoric (such as Pentre Ifan) and historic places,
Pembrokeshire features was a key factor in the establishment of the Pembrokeshire Coast National Park and a number of sites of special scientific interest (SSSIs). In the north of the county are the Preseli Hills, a wide stretch of high moorland supporting sheep farming and some forestry, with many prehistoric sites and the probable source of the bluestones used in the construction of the inner circle of Stonehenge in England. The highest point is Foel Cwmcerwyn at , which is also the highest point in Pembrokeshire. Elsewhere in the county most of the land (86 per cent according to CORINE) is