7 海洋浮游生物

這是斯匹克-沃克爾拍攝的浮游生物顯微照片。拍攝時采用了萊因伯格照明法，憑借有色盤提供的鮮艷色彩，使快速移動的浮游生物在明亮藍色調下清晰可見。

海洋浮游生物是非常小的有機生物，漂浮在海面上，很少或不具備移動能力。海洋浮游生物分為兩大類型：浮游植物和浮游動物。浮游植物是植物性浮游生物，在海面以下較淺的水深漂浮，依靠光合作用獲得能量；浮游動物是包括小型原生動物和多細胞動物在內的動物，它們主要以浮游生物為食。

Another image by Spike Walker shows plankton. In this image he uses Rheinberg illumination, whereby coloured discs are used to provide vibrant colours, making fast-moving plankton visible against a brilliant blue background.

Plankton are small organisms, plant or animal, that drift in the sea with little or no locomotive ability. They are split into two main categories: phytoplankton, which are plant plankton that drift close to the surface and rely on photosynthesis for energy; and zooplankton, which are animals and include small protozoans or metazoans that normally feed on other plankton. (Image: M. I. Walker) [NewScientist]