What are the examples of photosynthetic protozoan?

Photosynthetic protozoans, also known as protists, include organisms like Euglena, Chlorella, and Dinoflagellates. Euglena is notable for its unique ability to photosynthesize using chloroplasts while also being able to consume organic matter. Chlorella is a green microalga often studied for its high chlorophyll content and potential health benefits. Dinoflagellates, some of which are bioluminescent, play a crucial role in marine ecosystems and can cause harmful algal blooms.