The image shows a man standing in front of a projector screen in a lecture hall. He is giving a presentation and is gesturing with his right hand as he speaks. On the screen, there is an illustration of various types of sea creatures, including corals, jellyfish, and jellyfish. The illustration is colorful and detailed, with different shades of green, yellow, and pink. The background of the screen is white, and there is text on the left side of the image that reads "BIOLOGICAL COLOUR" and "Jim Hasselhoff, Department of Plant Sciences, University of Cambridge". There are a few people sitting in the audience, attentively listening to the presentation.