has quality adjacent to water body ice mass ice floe envoPolar Ice floes can exist in sea ice, in rivers or lakes. The WMO offers the following extent-based classification. Floe giant: Over 10 km across. Floe vast: 2-10 km across. Floe big: 500-2000 m across. Floe medium: 100-500 m across. Floe small: 20-100 m across. Ice cake: Less than 20 m across. Small ice cake: Less than 2 m across. ice floes An ice mass which forms a cohesive and contiguous sheet of water ice, floating upon the surface of a water body. http://orcid.org/0000-0002-3410-4655 continuous buoyancy laminar