‘Ancient Seas’ is our latest video installation at Clearwell Caves in Gloucester, where fish that died out more than 350 million years ago are brought back to life. Two projections enable these monsters of the deep to swim through the underground world, projected onto the walls and into the water in the caves. The animations are based on the fossil remains that make up the Chrinoidal Limestone in which the caves were originally formed during the Carboniferous period.