Ceratium hirundinella - <p><i><a href="//commons.wikimedia.org/w/index.php?title=Ceratium_hirundinella&amp;action=edit&amp;redlink=1" class="new" title="Ceratium hirundinella (page does not exist)">Ceratium hirundinella</a></i> <small>(O.F.Müller) Dujardin</small> </p> © Haeckel_Peridinea.jpg: Ernst Haeckel (1834–1919) <img alt="Blue pencil.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/15px-Blue_pencil.svg.png" decoding="async" width="15" height="15" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blu - Public domain - Wikimedia Commons