Histioneis elongata from the South Pacific, Tara Oceans Expedition station 111. Lugol's-fixed specimen, z-stack of images made using a 40x objective & DIC optics.
From the original species description: Figure 4 from plate 23 of Stein, F.R. (1883) Der Organismus der Arthrodelen Flagellaten. II. Hlfte. 30 pp & plates.
Summary[edit] Description: English: A Cochlodinium polykrikoides bloom in Narragansett Bay, RI. Date: 16 September 2016. Source: Own work. Author: Sgartz507.
Summary[edit] Description: Gymnodinium Stein 1883 sp. (agile?); Gymnodiniaceae, Gymnodiniales, Dinophyceae, Dinoflagellata (Dinophyta) English: North-West Black Sea, coastal waters, at a depth of 0.5 metre Русский: Северо-Запад Чёрного моря, прибрежные воды, на глубине 0,5 м. Date: 5 August 2007. Source: Own work. Author: Minami Himemiya.
Description: This is an image of a Carlsbad, CA beach during the 2005 red tide. The only image manipulation was the Photoshop Auto Levels command. The greenish-blue light is caused by millions (billions?) of microscopic organisms (Lingulodinium polyedrum) that bioluminesce when they are disturbed (as in a breaking wave). The effect is quite dramatic. The organisms also get washed to shore, so when you walk in the sand, your footsteps light up. If you are brave enough to enter the water at night, there will be a glow around you as you swim. Red Tides caused by L. polyedrum are not toxic. Date: 26 June 2005, 23:18. Source: Red Tide Starry Night. Author: Mike. Camera location33° 06′ 57.55″ N, 117° 19′ 33.61″ WView all coordinates using: OpenStreetMap 33.115987; -117.326002.
Sung Yeon Lee, Hae Jin Jeong, Ji Eun Kwon, Ji Hyun You, So Jin Kim, Jin Hee Ok, Hee Chang Kang, Jae Yeon Park
Wikimedia Commons
Summary[edit] Description: English: Micrographs of living cells in the clonal culture of Heterocapsa minima HMMJ1604, taken by light microscopy. (A) H. minima cell showing the conical epitheca and rounded hypotheca with a deeply excavated cingulum. (B) A pyrenoid with starch sheath (asterisk) is positioned in the epitheca, while the large ellipsoid nucleus (N) is positioned in the central part of cell. The chloroplast lobe of a single chloroplast is positioned near the surface of a cell (arrow). (C) A large nucleus (N) and a small red accumulation body (arrowhead). Scale bars represent: A–C, 5 μm. Date: 15 March 2019. Source: https://www.e-algae.org/journal/view.php?doi=10.4490/algae.2019.34.2.28 First report of the photosynthetic dinoflagellate Heterocapsa minima in the Pacific Ocean: morphological and genetic characterizations and the nationwide distribution in Korea. In: Algae 2019; 34(1): 7-21. doi:10.4490/algae.2019.34.2.28. Author: Sung Yeon Lee, Hae Jin Jeong, Ji Eun Kwon, Ji Hyun You, So Jin Kim, Jin Hee Ok, Hee Chang Kang, Jae Yeon Park.
Summary[edit] Description: English: This electron micrograph shows the complex pattern of plates forming the theca, Also seen are two grooves, one horizontal and one vertical, in which the flagella would normally lie. Date: 24 November 2017. Source: Own work. Author: Morseds.
Summary[edit] Description: Deutsch: Erythropsidinium spp. and its subcellular structure eyespot “ocelloid”. Light micrographs (LM) of Erythropsidinium spp. H = hyalosome (crystallin body), R = retinal body, N = nucleus, FL = flagella, PS = piston. The ocelloid is located at the left side of a cell seen in ventral view according to the orientation proposed by Kofoid and Swezy. Scale bars: 20 μm. Date: 3 March 2015. Source: Fig. 1A at https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0118415 Function and Evolutionary Origin of Unicellular Camera-Type Eye Structure. PLOS ONE 10(3), PMID 25734540, PMC 4348419, doi:10.1371/journal.pone.0118415. Author: Shiho Hayakawa, Yasuharu Takaku, Jung Shan Hwang, Takeo Horiguchi, Hiroshi Suga, Walter Gehring, Kazuho Ikeo, Takashi Gojobori. Other versions: .
Summary[edit] Description: English: A 15-day old Siamese fighting fish (Betta splendens) with a severe infestation of Oodinium sp. parasites (Velvet disease, also known as dust disease). Svenska: Ett 15 dagar gammalt yngel av siamesisk kampfisk (Betta splendens) infekterat av Oodinium sp. (sammetssjuka). தமிழ்: இது சண்டையிடும், அமெரிக்க மீன்குஞ்சு ஆகும். Date: May 2009. Source: Own work. Author: ZooFari. This photo was taken by ZooFari (see all images and SVGs). :.
Summary[edit] Description: Gonyaulax spinifera (Claparède et Lachmann) Diesing 1866; Gonyaulacaceae, Gonyaulacales, Dinophyceae, Dinoflagellata (Dinophyta) English: North-West Black Sea, coastal waters, at a depth of 0.5 metre Русский: Северо-Запад Чёрного моря, прибрежные воды, на глубине 0,5 м. Date: 5 August 2007. Source: Own work. Author: Minami Himemiya.
Summary[edit] Description: Polski: Zdjęcie okrzemka Pyrocystis fusiformis, znanego też jako "świecące glony" wykonane w mikroskopie w ciemnym polu. Zdjęcie wykonano w trakcie badań nad wpływem długości fali świetlnej na bioluminescencję Pyrocystis fusiformis. Warto zwrócić uwagę na centralnie położone jądro, oraz na zgrupowane wokół niego chloroplasty, które przemieszczają się tam w trakcie nocy by w dzień przemieścić się bliżej ściany komórkowej.English: Photo of dinoflagellata Pyrocystis fusiformis, also known as "glowing algae" made in a dark field microscope. The photo was taken during the study on the effect of light wavelength on the bioluminescence of Pyrocystis fusiformis. Pay attention to the centrally located nucleus, and the chloroplasts around it, which move there during, the night to move closer to the cell wall during the day. Date: 29 June 2016. Source: Own work. Author: Aleksandra Szczerbiak.