Pond life. Composite image of a darkfield light micrograph of pond life behind an image of a light microscope. In the top row from left to right are a Brachionus quadridentatus rotifer, a Volvox sp. colony, a copepod (Cyclops sp.) with eggs and a Philodina sp. rotifer. An Euplotes sp. ciliate is at centre, a Paramecium caudatum ciliate is at bottom and a water flea (Daphnia sp.) is at lower right. Strands of filamentous algae cross the image. Components are not shown to scale.