Glaciers that meet the sea are known as tidewater glaciers. As these massive rivers of ice flow downhill, their faces are undercut by tidal currents resulting in spectacular “calving” as huge chucks of ice break off. The faces of some glaciers reach more than 200 feet into the air and may extend father than that underwater. This image is included as the 12th spread in my children’s book, “Once Upon Alaska”. Thank you for visiting.