On the Ice: Science Fiction

The crackle of ice beneath her feet warned her just in time to leap backwards. From under the ice, the narwol arched its back and spun into midair, one long tentacle striking out before it crashed back through the ice to its cold prowling ground. The heat of her sigh left a plume of white in the air. She closed her eyes for a moment and then moved forward more quickly. If a narwol was on the prowl, she had best get off the ice as soon as possible. She thought with longing of the prefab igloo that was her home. "Pigloos" the colonists called them.

Inspiration: Not a clue.
Story Potential: Medium-high.
Finished Length: ?
Notes: There's nothing here to make a story, but it's a fantastic setting.