Continent continent. From this perspective, the edge of the continental shelf is the true edge of the continent, as shorelines vary with changes in sea level. In this sense the islands of Great Britain and Ireland are part of Europe, while Australia and the island of New Guinea together form a continent. As a cultural construct, the concept of a continent may go beyond the continental shelf to include oceanic islands and continental fragments. In this way, Iceland is considered part of Europe and Madagascar part of Africa. Extrapolating the concept to its extreme, some geographers group the Australian continental plate
Smallest organisms chameleons ("B. minima"), 14–19 millimetres for male Mount d'Ambre leaf chameleons ("B. tuberculata") and 15–16 millimetres for male "B. micra", though females are larger. Of the aforementioned geckos, "S. ariasae" was first described in 2001 by the biologists Blair Hedges and Richard Thomas. This dwarf gecko is endangered and lives in Jaragua National Park in the Dominican Republic and on Beata Island ("Isla Beata"), off the southern coast of Hispaniola in the Dominican Republic. The world's smallest turtle is the speckled padloper tortoise ("Homopus signatus") from South Africa. The males measure , while females measure up to almost . The