Diatoms:Diatoms are a type of microalgae characterized by their unique, ornate cell walls made of silica. They are one of the most abundant groups of phytoplankton in aquatic environments.
Phytoplankton:Phytoplankton are microscopic, photosynthetic organisms that drift in aquatic environments and form the base of the aquatic food chain. They include various types of microalgae, such as diatoms and dinoflagellates.
Silica: Silica is a chemical compound composed of silicon and oxygen, which is the primary component of the cell walls of diatoms like Thalassiosira. It provides structural support and protection for these microalgae.