Symbiotic algae are microorganisms that live within the tissues of host organisms, engaging in a mutualistic relationship where both parties benefit. The most well-known symbiotic algae are zooxanthellae, which reside in coral polyps. These algae are primarily from the genus Symbiodinium and are essential for the survival of coral reefs, providing up to 90% of the energy corals need through photosynthesis.
