An aquarium full of tropical fish serves as inspiration for Diane Barnes. The programme begins with footage of Diane observing tropical fish in an aquarium. Back in her studio she chooses an illustration of a Puffer fish as the stimulus for a new linocut. Having drawn the key features in black on lino, Diane then gouges out the areas which will remain uncoloured, using a lino cutter or wood engraver. The first wash is now rolled on to the design, blue to represent the sea and pink for a foundation eye colour. Oil-based block printing ink is best for this purpose, although water-based colour can be used. Pressed against paper, the linocut is now rolled through a press. The board is then cleaned with vegetable oil (not shown), further cutting is carried out and the next colour applied. At each stage the board, in position against the paper, is rolled through the press. After each stage has been repeated a number of times we see the final print of the Puffer fish. (It is possible to print over 200 copies from one linoblock.)