Rocas Bainbridge island

Photograph by Bobby Haas
As startling as a bright-blue eye, a central lagoon peers out from Rocas Baimbridgen in Ecuador's Galápagos Islands. The stark, rocky island teems with life at times—the brackish lagoon waters are favored by flamingos.

The Galapágos Islands are geologically young and famed for their vast number of endemic species, which were studied by Charles Darwin during the voyage of the Beagle. This blue lagoon nestled inside Rocas Baimbridgen is a shallow laggon in the middle of the sea and provides food for millions of flamingos.