TopographyDotted in the Sea are fou

Topography
Dotted in the Sea are four main island groups, namely, the Paracels, Spratlys, Pratas and Macclesfield Bank
Of the four groups, the largest is the Spratys followed by the Paracels
Most of them are reefs, shoals, atolls and other seamounts and outcrops. Many are awash at high tide