My research deals with a number of related topics: bioenergetics and energy budgets, functional responses, filter pumps and the energetic cost of filter feeding, adaptations to the environment, water pumping and particle retention efficiency, particle capture mechanisms, switching between deposit and filter feeding, the grazing impact of benthic filter feeders, and the predation impact of jellyfish, as well as plankton dynamics and environmental assessments, mussels as pollution indicators and the importance of filter-feeding bivalves for the uptake of pollutants in the marine grazing food chain. See my home page: marbio.sdu.dk. Keywords: filter feeding in marine invertebrates; bioenergetics (food uptake, assimilation, respiration, energy budgets, growth, costs of growth, and growth efficiency); biological filter pumps; biomixing; fluid mechanics; population grazing impact; particle capture mechanisms; benthic–pelagic coupling; biological structure and nutrient dynamics; grazing impact of benthic filter feeders; implications of density-driven currents for interaction between jellyfishes and zooplankton.