CIA Factbook - Tromelin Island: Features map and brief descriptions of geography, economy, government, and people.
NationMaster - Tromelin Island: Profile includes information for various aspects of the country, with a special emphasis on statistics and rankings.
Weatherbase - Serge Frolow, Tromelin Island: Average and record levels for temperature and precipitation.
Wikipedia - Scattered Islands in the Indian Ocean: Hyperlinked encyclopedia article covers the history, government and politics, geography, economy, demographics, language and culture of the Bassas da India, Europa, Juan de Nova, Glorioso, and Tromelin islands.