New 'vertical' Ulster Bank notes are being produced and are expected to be in circulation as early as next year.
The bank, which is part of Royal Bank of Scotland (RBS), has released the "living in nature" images of its notes, which are portrait-shaped rather than landscape and will replace its paper currency.
The £5 and £10 polymer notes will show images of Strangford Lough, brent geese, Lough Erne, the Irish hare and guelder-rose shrubs.
Ulster Bank announced last year it would be following the Bank of England by printing plastic money and the new notes were revealed at an event in the bank's Andersonstown branch.
Les Matheson, chief of personal and business banking at RBS, said: "These notes are a signal of our commitment to the heritage and brand of Ulster Bank in Northern Ireland, demonstrating that we are an active and engaged part of the communities that we serve."
Head of Ulster Bank in Northern Ireland Richard Donnan said: "The notes will also contain advanced security features that will make the notes much harder to counterfeit."