Frozen Oceanic Platform, Like the Ross or Ronne
Puzzle 9 of Antarctica Medium Pack
Question is: Frozen Oceanic Platform, Like the Ross or Ronne
and the answer is: ICESHELF
Word Meaning:
ICE SHELF — A thick, floating platform of ice that forms where a glacier or ice sheet flows down to a coastline and onto the ocean surface. Ice shelves are found in Antarctica, Greenland, and Canada only.
Definitions from Wiktionary.