Acantharian

Acantharians are tiny, single-celled marine organisms found in the ocean, primarily within the phytoplankton community. They are characterized by intricate, star-like silica skeletons called tests, which give them a striking appearance. These organisms play a crucial role in the ocean's food web by capturing smaller particles and serving as food for larger marine animals. Additionally, their silica shells contribute to the ocean’s sediment after they die, helping form biogenic silica deposits. Acantharians are important for understanding ocean health and carbon cycling, making them significant in marine ecology and climate studies.