Chloroviruses are a type of virus that specifically infects green algae, particularly those in the genus Chlorella. These viruses are large and complex, with a structure that allows them to effectively invade and replicate within the algal cells. They play a significant role in regulating algal populations in aquatic ecosystems. These viruses are of interest to scientists because they can influence nutrient cycling and energy flow in marine environments. By controlling algal blooms, chloroviruses help maintain ecological balance. Additionally, studying these viruses can provide insights into viral evolution and the interactions between viruses and their hosts.