The long, indented coastline includes many habitats. Some areas have cliffs and rocky headlands with narrow tidal inlets, while others have sheltered bays with intertidal mudflats and sandy beaches. The land was ice-covered until 10,000 years ago, and species diversity is still lower than in other European biogeographic regions. Still,
wildlife is abundant, including large flocks of
migratory birds and many marine organisms fed by nutrients carried by the
Gulf Stream from the
Caribbean. Humans have drastically modified the land, with forests cleared for farming and large urbanized areas. Pollution is a problem on both land and sea, and over-fishing is also a threat. ==Notes==