The image shows a presentation slide on a stage with three images of different types of oysters. The slide is divided into three sections, each with a different type of oyster. 

The first section on the left shows a giant deep-sea oyster with a yellowish-brown color and a white interior. The second section shows a close-up of the oyster's shell. The third section shows the same oyster, with a blue interior and a darker interior.

In the center of the slide, there are three images - one of a freshwater pearl oyster (M. margaritifera) and another of an oceanic pearl (Arctic). The first image is of a large, round, white shell with a smooth surface. The other two images are of the same freshwater pearl, with the larger one in the center and the smaller one on the right. The background is dark, and there are people sitting in front of the screen, attentively listening to the presentation.