Australia Post’s 13 October 2026 Waterscapes issue brings together designs for Norfolk Island, Christmas Island, the Cocos (Keeling) Islands and the Australian Antarctic Territory. Each of the four stamps has a $1.85 denomination.

The subjects are Anson Bay on Norfolk Island, a reef off Christmas Island, Pulu Belan Madar in the Cocos group, and Lichen Lake near Davis research station in Antarctica. The photographs are credited respectively to Amy Mercer Photography, Chris Bray, Ryan Chatfield and Barend Becker of the Australian Antarctic Division.

Sharon Rodziewicz of the Australia Post Design Studio designed the stamps and products. RA Printing produces the gummed stamps by offset lithography. The stamps measure 26 by 37.5 millimetres; the miniature sheet measures 135 by 80 millimetres. The sheet arrangement is fifty stamps in two groups of twenty-five.

A Canberra first-day postmark accompanies the issue. The product range includes a stamp set, miniature-sheet first-day cover, stamp pack and four maximum cards.