A strew slide from North Sea, Holland, Goeree. Prepared by Brian Darnton. Range of species present. Olympus BHB microscope using 450nm LED light. I selected one, a Rhaphoneis sp. (perhaps R. amphiceros) for further imaging. 63x Leitz Pl Apo 1.4 objective, oil immersion. Olympus Aplanat Achromat condenser, oil immersion, oblique lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. Single, unstacked image.