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The sea pens' ability to be clumped together and spatially unpredictable hinders sea stars' predation abilities. [9] When touched, some sea pens emit a bright greenish light; this is known as bioluminescence. They may also force water out of their bodies for defence, rapidly deflating and retreating into their peduncle.
Phylum: Cnidaria: Class: ... Family: Renillidae Gray, 1870: Genus: Renilla Lamarck, 1816: Renilla is a genus of sea pen. ... Sea pansy is a common name for species in ...
The two main subclasses of Anthozoa are the Hexacorallia, members of which have six-fold symmetry and includes the stony corals, sea anemones, tube anemones and zoanthids; and the Octocorallia, which have eight-fold symmetry and includes the soft corals and gorgonians (sea pens, sea fans and sea whips), and sea pansies.
The bishop-fish, a piscine humanoid reported in Poland in the 16th century. Aquatic humanoids appear in legend and fiction. [1] " Water-dwelling people with fully human, fish-tailed or other compound physiques feature in the mythologies and folklore of maritime, lacustrine and riverine societies across the planet."
A sea cucumber (Actinopyga echinites), displaying its feeding tentacles and tube feet. Most known animal phyla appeared in the fossil record as marine species during the Ediacaran - Cambrian explosion , probably caused by long scale oxygenation since around 585 Ma (sometimes called the Neoproterozoic Oxygenation Event or NOE) and also an influx ...
Human taxonomy is the classification of the human species within zoological taxonomy. The systematic genus , Homo , is designed to include both anatomically modern humans and extinct varieties of archaic humans .
The list of organisms by chromosome count describes ploidy or numbers of chromosomes in the cells of various plants, animals, protists, and other living organisms. This number, along with the visual appearance of the chromosome, is known as the karyotype , [ 1 ] [ 2 ] [ 3 ] and can be found by looking at the chromosomes through a microscope .
Invertebrate sea life includes the following groups, some of which are phyla: The 49th plate from Ernst Haeckel's Kunstformen der Natur, 1904, showing various sea anemones classified as Actiniae, in the Cnidaria phylum "A variety of marine worms": plate from Das Meer by M.J. Schleiden (1804–1881) Acoela, among the most primitive bilateral ...