Cakaulevu Reef, Fiji

Also called the Great Sea Reef, Cakaulevu shines turquoise through clear, shallow waters. It is the third longest continuous barrier reef in the world, behind the Great Barrier Reef in Australia and the Mesoamerica Reef off Central America.

Shorelines, Sandy or Otherwise, That May Not Last

“The World’s Beaches: A Global Guide to the Science of the Shoreline,” authored by Orrin H. Pilkey, William J. Neal, James Andrew Graham Cooper And Joseph T. Kelley, “is a comprehensive, readable guide to the physical features of many kinds of beaches and some of the threats they face”. A book review by Cornelia Dean , The New York Times.