Solve these clues to fill the grid.
- Frozen flakes that fall in winter
- 3 Across
- Largest mammal ever known
- 7 Across
- Huge body of salt water
- 8 Across
- A person with advanced knowledge of one or more ___ (plural)
- 10 Across
- Fastener consisting of a resinous composition that is plastic when warm (plural)
- 12 Across
- Predatory black-and-white toothed ___ with large dorsal fin
- 13 Across
- The ___ point of the Earth's axis
- 1 Down
- Someone who travels into little known regions (plural)
- 2 Down
- Frozen water
- 4 Down
- Short-legged flightless birds of cold southern especially Antarctic regions having webbed feet (plural)
- 5 Down
- An extremely cold continent at the south pole almost entirely below the ___ Circle
- 6 Down
- Low in temperature; also a sniffly illness
- 9 Down
- Absence of light or illumination
- 11 Down
