Image of pond scum taken at 6:50pm on 4/8/19 at the BBB Lily Pad Pond at Caltech by sticking a falcon tube into the pond. Some questions about this photograph are what the specimens in the photograph are and what the scale of their sizes are. On identifying the specimens a more zoomed in and stable photograph could help and as for scale a reference object should be placed on the slide in view of the lens. #caltechbi1