What type of microorganisms are diatoms?

Diatoms are classified as photosynthetic algae that belong to a group known as phytoplankton. They are unique microorganisms characterized by their glass-like cell walls made of silica, which gives them a distinct appearance under a microscope. Diatoms play an essential role in aquatic ecosystems, as they carry out photosynthesis, producing oxygen and serving as a primary food source for various aquatic organisms.

Being photosynthetic algae, diatoms are capable of harnessing sunlight to convert carbon dioxide and water into glucose and oxygen, a process integral to the carbon cycle. This not only supports their growth but also impacts the broader ecosystem, influencing energy flow and nutrient cycling in aquatic environments. Their ecological importance is underscored by their widespread distribution and abundance in marine and freshwater environments, where they contribute significantly to primary production.