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Some gorgonians contain algae, or zooxanthellae. This symbiotic relationship assists in giving the gorgonian nutrition by photosynthesis. Gorgonians possessing zooxanthellae are usually characterized by brownish polyps. Gorgonians are found primarily in shallow waters, though some have been found at depths of several thousand feet.
They present genetic sequences of non-photosynthetic plastids, evidence of their phototroph ancestry. [ 8 ] Some species, considered ectoparasites , do not ingest prey cells, but rather fully or partially "suck" their contents, a process known as myzocytosis , common among alveolates .
Eunicella singularis, the white gorgonian, is a species of colonial soft coral, a sea fan in the family Gorgoniidae. It is found in the western Mediterranean Sea , Adriatic Sea and Ionian Sea. It was first described in 1791 by the German naturalist Eugenius Johann Christoph Esper .
Paramuricea sp. Eunicea sp. Holaxonia is a suborder of soft corals, a member of the phylum Cnidaria. [1] Members of this suborder are sometimes known as gorgonians and include the sea blades, the sea fans, the sea rods and the sea whips.
Comparatively, in the laboratory, most cultured cells—which are large compared to normal plant cells—produce very long and abundant stromules that extend to the cell periphery. In 2014, evidence was found of the possible loss of plastid genome in Rafflesia lagascae , a non-photosynthetic parasitic flowering plant, and in Polytomella , a ...
E. gorgoniicola is a gram-negative cell, characterized by the outer and inner membranes that enclose a thin layer of peptidoglycan. [6] Cells are typically rod-shaped, and are about 1.7-2.5μm long (average 2.0μm) and 0.4-0.9μm in diameter (average 0.7μm). [1] [2] E. gorgoniicola possess flagella that allow for motility.
G. ventalina is a filter feeder.Each polyp extends its eight tentacles to catch plankton drifting past on the current. Its tissues contain symbiotic dinoflagellate Symbiodinium spp., which are photosynthetic and use sunlight to create organic carbon compounds which are then available to the host coral.
Octocorallia (also known as Alcyonaria) is a class of Anthozoa comprising over 3,000 species [1] of marine organisms formed of colonial polyps with 8-fold symmetry. It includes the blue coral, soft corals, sea pens, and gorgonians (sea fans and sea whips) within three orders: Alcyonacea, Helioporacea, and Pennatulacea. [2]