The Inuit
Until the Ice Breaks: Gain Food from Snow, Tundra and Ice tiles outside workable city limits. Fish adjacent to Snow, Tundra and Ice tiles will turn into a Luxury Seals Resource and provides a Production boost when improved.
Unaaq: Unlike the Scout it replaces, the Unaaq is a slightly weaker one-hex ranged unit that weilds a harpoon. Additionally, Unaaq can move faster on snow and can embark before Optics. Once the Inuit have researched Sailing, the Unaaq can improve Sea Resources! The Unaaq are expended when used in this way.
Inuksuk: A Unique Improvement exculsive to the Inuit. The Inuksuk can only be built on Snow and Tundra and not next to each other. It Provides +1 Food and +1 Culture, with an Additional +1 Food coming after Banking. After building an Inuksuk, the surrounding Snow, Ice and Tundra without Forest tiles gain +1 Food and +1 Production. Additionally, the Inuksuk will randomly claim Snow Ice and Tundra tiles surrounding it, if not already claimed. Essentially, this allows you to build the Inuksuk far away from your cities and gain Food as specified in the UA without even having to work them!