An unassuming slide simply labeled ‘Unknown brackish locality’. Range of species present. Mounted in Hyrax and dated April 1983. No makers name but I think this is by Bernard Hartley. Olympus BHB microscope using 450nm LED light. I selected an example of what I think is Surirella striatula for imaging at higher resolution. 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. 36 images stacked in Zerene (Pmax). Puncta spacing measured in ImageJ as 291nm.