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 have developed along the Milford Haven Waterway and the county has attracted other major ventures. In 2016, the Rt. Hon. Stephen Crabb, then Welsh Secretary, commented in a government press release: ""...with a buoyant local economy, Pembrokeshire is punching above its weight across the UK."" Until the 12th century, a great extent of Pembrokeshire was virgin woodland. Clearance in the lowland south began under Anglo-Flemish colonisation and under mediaeval tenancies in other areas. Such was the extent of development that by the 16th century there was a shortage of timber in the county. Little is known about mediaeval farming methods,