Marine bacteriophages are significant parasites of unicellular marine cyanobacteria. Lichens are a symbiotic relationship between fungi and photosynthetic algae or cyanobacteria. A lichen is a symbiosis of a macroscopic fungus with photosynthetic microbial algae or cyanobacteria. Green algae are examples of algae that have primary chloroplasts derived from endosymbiotic cyanobacteria. In plants, algae and cyanobacteria, photosynthesis releases oxygen. The phytoplankton consists of diatomaceous, peridinium and cyanobacteria algae. In plants, algae, and cyanobacteria, photosynthesis releases oxygen. Anabaena is a genus of filamentous cyanobacteria that exist as plankton. Photosystems are found in the thylakoid membranes of plants, algae and cyanobacteria. Among the phytoplankton are members from a phylum of bacteria called cyanobacteria. The algae contain chloroplasts that are similar in structure to cyanobacteria. Lichens independently emerged from fungi associating with algae and cyanobacteria multiple times throughout history. The fungi benefit from the carbohydrates produced by the algae or cyanobacteria via photosynthesis. Plants had thus inherited photosynthesis from cyanobacteria. Payloads may contain extremophiles for diverse environments and cyanobacteria similar to early microorganisms.