Saint Lucia is an island country in the West Indies in the eastern Caribbean Sea on the boundary with the Atlantic Ocean. Part of the Windward Islands of the Lesser Antilles, it is located north/northeast of the island of Saint Vincent, northwest of Barbados and south of Martinique. It covers a land area of 617 km2 and reported a population of 165,595 in the 2010 census.
Saint Lucia contains five terrestrial ecoregions: Windward Islands moist forests, Leeward Islands dry forests, Windward Islands dry forests, Windward Islands xeric scrub, and Lesser Antilles mangroves. It had a 2019 Forest Landscape Integrity Index mean score of 6.17/10, ranking it 84th globally out of 172 countries.
A species of lizard, Anolis luciae, is named for and is endemic to Saint Lucia.