In photic zones benthic diatoms dominate as photosynthetic organisms. The intertidal zone and the photic zone in the oceans are relatively familiar habitats. The photic zone has sufficient light for phytoplankton to photosynthese. In the photic zone, the photosynthesis rate exceeds the respiration rate. The remixing and upwelling eventually bring nutrient-rich wastes back into the photic zone. Huxley and Walter were among the first to articulate the subjective correlates of photic stimulation. Day length and insolation intensity also controls the extent of the photic zone. It also includes zooplankton, the consumers in the photic zone. There is also a genetic factor that increases the probability of photic sneeze reflex. The pelagic part of the photic zone is known as the epipelagic. Bacon therefore guessed that the eyes played a vital part in triggering photic sneezing. The photic sneeze effect has been documented for many centuries. The Ekman transport additionally brings more nutrients to the photic zone. Its origin lies in activities within the productive photic zone. The photic zone can be subdivided into two different vertical regions.