Serving up the tiniest cuteness 🥰⁠ ⁠ Zooplankton can be subdivided into two major groups. Holoplankton (copepods and krill) spend their entire lives as plankton and thus provide major food sources for pelagic fisheries. Meroplankton (larvae of animals like barnacles, mussels, annelids, and fish) spend only part of their lives as plankton.⁠ ⁠ Copepods like the one in this video can be found in massive numbers across the world ocean. They play an important role in ocean food webs as predators—they eat even smaller diatoms and phytoplankton—and prey for animals like jellies, fish, and filter feeders.⁠ ⁠ Zooplankton are notoriously difficult to sample. Despite opportunities for mixing, individual zooplankton are tiny, and species are often patchily distributed. Coastal oceans are physically dynamic, high-energy environments. Winds, currents, and upwelling fronts affect the availability of nutrients and distribution of food that control zooplankton growth and dispersal. To tackle these challenges, the MBARI team developed the SIMZ program to explore more efficient zooplankton sampling and identification methods.⁠ ⁠ Traditionally, tow-nets are used to sample plankton along paths through the water. Because these paths often cross smaller environmental patches, they frequently lack the precision to associate zooplankton species’ distribution and abundance with particular physical and biological processes. MBARI engineers have equipped an autonomous underwater vehicle (AUV) with gulpers—bottles that rapidly inhale discrete water samples—to better understand the spatial patchiness in zooplankton abundance. The AUV is equipped with sensors that measure things like temperature and salinity, and onboard computer software that instructs the Gulper AUV to recognize and autonomously sample specific environmental patches, such as upwelling fronts or chlorophyll layers. This “surgical” approach to ocean sampling allows SIMZ researchers to study the effects of specific physical processes on zooplankton distribution and diversity. #MBARI #DeepSea #DeepOcean #fyp #InLove #Obsessed - @mbari_news