Juveniles feed on phytoplankton like diatoms and small zooplankton including cladocerans and ostracods. Inorganic selenium bioaccumulates more readily in phytoplankton than zooplankton. The krill can also catch and eat copepods, amphipods and other small zooplankton. The fauna includes several species of zooplankton and benthic animals. Anchoveta were previously thought to eat mostly phytoplankton, small zooplankton, and larvae. The diet consists of both zooplankton and phytoplankton. Krill are particularly large predator zooplankton which feed on smaller zooplankton. Copepods and other tiny crustaceans are the most common zooplankton eaten by herring. They feed on zooplankton and bottom-dwelling crustaceans in summer. They have diverse diets, however, including zooplankton, insects, and crustaceans. Their diet consists of zooplankton, small insects and insect larvae, and detritus material. Larvae appear to also opportunistically feed on small zooplankton while swimming. Fish can feed on zooplankton and plant material. Basking sharks are not indiscriminate feeders on zooplankton. They are then consumed by microscopic animals called zooplankton.