Ophrydium protozoa. Polarised light micrograph of a group of Ophrydium sp. Protozoa. These colonial micro-organisms contain green algae (green) inside

---

Ophrydium protozoa. Polarised light micrograph of a group of Ophrydium sp. Protozoa. These colonial micro-organisms contain green algae (green) inside their bodies, which have a symbiotic relationship with the protozoa. They photosynthesise inside the protozoan's body providing it with sugars and oxygen, while deriving protection from their host. Magnification: x100, when printed 10 centimetres wide.

---

Size: 3402px × 5136px
Photo credit: © MAREK MIS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, alga, algae, algal, animal, aquatic, background, biological, biology, blue, fauna, freshwater, green, invertebrate, life, light, microbiological, microbiology, micrograph, microorganism, microscope, microscopic, microscopy, multiple, nature, ophrydium, polarised, pond, protist, protists, protozoa, protozoan, single, single-celled, sp., symbiosis, symbiotic, unicellular, wildlife, zoological, zoology