Ice shelf

An ice shelf is a large platform of ice, where a glacier flows down to a coastline. An ice shelf is usually very thick, usually  or more. Some ice shelves float on the water. Ice shelves that float are usually much thinner. 

The biggest areas of ice shelf are in Antarctica:
Ross Ice Shelf , as of 2013
Filchner-Ronne Ice Shelf, 

Other websites

Category:Bodies of water
Category:Ice