Where does krill get energy?

Krill primarily obtain energy by consuming phytoplankton, which are microscopic plants that perform photosynthesis in the ocean. They feed on these tiny organisms by filtering them from the water using their specialized appendages. In addition to phytoplankton, krill may also consume small amounts of zooplankton and detritus. This diet provides them with the carbohydrates, proteins, and lipids necessary for their energy needs.