Glassy Radiolarian Beauty The shells of radiolarians rank among some of the treasures of the ocean, with their intricate, gorgeous geometry. The shells are made of silica, which protects the single-celled animals as they drift as zooplankton in the ocean. This image, taken at 120x zoom, was an honorable mention in the 2012 Nikon Small World photomicrography competition.
Dinoflagellate species are morphologically diverse and come in an assortment of complex forms, including various intricate organelles. One such complex organelle is called a scintillon, found in 18 genera of Dinoflagellates and is central to the reaction causing light emission.