Saint Helena harbors at least 40 species of plants unknown anywhere else in the world; Ascension is a breeding ground for sea turtles and sooty terns; Queen Mary's Peak on Tristan da Cunha is the highest island mountain in the South Atlantic and a prominent landmark on the sea lanes around southern Africa
People ::Saint Helena, Ascension, and Tristan da Cunha
Population:
7,670 country comparison to the world: 226 note: only Saint Helena, Ascension, and Tristan da Cunha islands are inhabited (July 2010 est.)
Age structure:
0-14 years: 18.3% (male 712/female 685)
15-64 years: 70.4% (male 2,744/female 2,629)
65 years and over: 11.4% (male 412/female 455) (2010 est.)
Median age:
total: 38.2 years