radiolaria
/ˌreɪdioʊˈlɛriə/
noun
- A group of single-celled ocean organisms with hard, often beautiful, glass-like skeletons made of silica.
- The intricate shapes of radiolaria make them popular subjects for microscope photography.
- Radiolaria are found in oceans all over the world, from the surface to deep water.
- Scientists study radiolaria fossils to learn about ancient ocean conditions.