1) Antarctic sight 2) Arctic floater 3) Arctic Ocean sheet 4) Arctic sight 5) Baffin Bay floater 6) Floating solid H2O 7) Frozen sheet in the sea 8) Hazard smaller than a 7 Down 9) Layer of frozen water 10) Northern sea sight 11) Perch for a penguin 12) Refuge for penguins 13) Ross sea sight 14) Something fallen off a shelf Found on https://www.crosswordclues.com/clue/ice-floe
An ice floe (ice float) is a large pack of floating ice. Such ice floes are found in: Ice flow, the movement of ice, is a misspelling of ice floe. ... Found on http://en.wikipedia.org/wiki/Ice_floe
a cohesive sheet of ice floating in the water; the sea ice cover is made up of conglomerates of floes; ice floes are not unique to sea ice, as they also occur in rivers and lakes. Aerial view of ice floes. Found on https://nsidc.org/cryosphere/glossary?page=12