A globally distributed single-celled organism that occurs in harmful algal blooms has been found to exhibit an unusual organisation of photosynthesis. Researchers at the University of Oldenburg (Germany) have taken a closer look at the unusual cell biology of the species Prorocentrum cordatum from the group of dinoflagellates. The results of their study, published in the journal Plant Physiology, could help to better understand the role of the species in the environment and the increased occurrence of algal blooms at higher water temperatures.