Pond life. Composite image of a darkfield light micrograph of pond life behind an image of a light microscope. From left to right in the top row are a water flea (Daphnia sp.) and a copepod (Cyclops sp.) with eggs, in the middle a Synchaeta sp. rotifer and another Daphnia sp. water flea and below a gastrotrich, a Paramecium caudatum ciliate and a copepod larva. Strands of filamentous algae cross the image. Components are not shown to scale.