Hydrozoa (hydrozoans; from Ancient Greek ὕδωρ (húdōr) 'water' and ζῷον (zôion) 'animal') is a taxonomic class of individually very small, predatory animals...

Schuchert P, ed. (2012). "Turritopsis dorhnii (Weissmann, 1883)". World Hydrozoa database. World Register of Marine Species. Retrieved November 29, 2012...

Cnidaria, and is often considered a subphylum. It includes the classes Hydrozoa, Scyphozoa, Staurozoa and Cubozoa, and possibly the parasitic Polypodiozoa...

Siphonophorae (from Greek siphōn 'tube' + pherein 'to bear') is an order within Hydrozoa, which is a class of marine organisms within the phylum Cnidaria. According...

classification Domain: Eukaryota Kingdom: Animalia Phylum: Cnidaria Class: Hydrozoa Order: Anthoathecata Family: Bougainvilliidae Genus: Bougainvillia Lesson...

individual is actually a colony of hydrozoan polyps. The taxonomic class, Hydrozoa, falls under the phylum Cnidaria, which includes anemones, corals, and...

sea pens); swimming Scyphozoa (jellyfish); Cubozoa (box jellies); and Hydrozoa (a diverse group that includes all the freshwater cnidarians as well as...

related more closely to scyphozoan jellyfish than either are to the Hydrozoa. Hydrozoa medusae also have tetra-radial symmetry, nearly always have a velum...

classification Domain: Eukaryota Kingdom: Animalia Phylum: Cnidaria Class: Hydrozoa Order: Anthoathecata Family: Corynidae Genus: Coryne Gaertner, 1774 Species...

while the medusa stage is a singular, planktonic organism. Generally in hydrozoa the medusa develops from the asexual budding of the polyp and the polyp...

redescription of the Portuguese man-of-war, Physalia physalis (Cnidaria, Hydrozoa, Siphonophorae, Cystonectae) from Brazil". Iheringia. Série Zoologia. 97...

animal species that have both polyp and medusa stages in their life cycle. Hydrozoa belongs to the phylum Cnidaria, which are aquatic (mainly marine) organisms...

Amphisbetia is a genus of hydrozoa in the family Sertulariidae described by L. Agassiz in 1862 based on the type species Amphisbetia operculata (Linnaeus...

Velella is a monospecific genus of hydrozoa in the Porpitidae family. Its only known species is Velella velella, a cosmopolitan (widely distributed) free-floating...

"Complex neural architecture in the diploblastic larva of Clava multicornis (Hydrozoa, Cnidaria)". The Journal of Comparative Neurology. 519 (10): 1931–1951...

created by A.K. Totton in 1954 to accommodate these unusual genera of Hydrozoa as their taxonomic affinities were unclear. They had previously been placed...

was born in Ballarat. She is best known for her work on the taxonomy of Hydrozoa (hydroids) and for being one of the first female Scuba divers in Australia...

The Calcaires du Bou Dahar (also known as Djebel Bou Dahar Paleoshoal, Djebel Bou Dahar, Calcaires du Bou Dahar Formation, or Bou Dahar Formation) is a...

Schuchert, P. (2011). Schuchert P (ed.). "Hydra vulgaris Pallas, 1766". World Hydrozoa database. World Register of Marine Species. Retrieved 2011-12-18. Hydra...

produce both testes and ovaries at the same time. Many members of the Hydrozoa go through a body change from a polyp to an adult form called a medusa...

Auckland, New Zealand. The entire Turritopsis genus is a very small group of Hydrozoa creatures with the Crimson Jellyfish being on the slightly larger side...

December 1926 – 29 March 2009) was a Belgian marine biologist and expert on Hydrozoa. Jean Bouillon was born in Uccle, Belgium. He worked from 1955 to 1991...

Although they look like a jellyfish, they actually belong in the class Hydrozoa, while true jellyfish belong in class Scyphozoa. Flower hat jellies occur...

sea anemones and corals, the individual is always a polyp; in the class Hydrozoa, however, the individual may be either a polyp or a medusa, with most species...

Accessed through: Schuchert, P. (2014) World Hydrozoa database at http://www.marinespecies.org/hydrozoa/aphia.php?p=taxdetails&id=13551 on 2014-10-31...

redescription of the Portuguese man-of-war, Physalia physalis (Cnidaria, Hydrozoa, Siphonophorae, Cystonectae) from Brazil". Iheringia. Série Zoologia. 97...

Capitata is a suborder of Hydrozoa, a class of marine invertebrates belonging to the phylum Cnidaria. Members of this suborder are characterised by the...

worms, clams, mussels, predatory crustaceans, barnacles and small fish. Hydrozoa, also known as hydroids, inhabit SMEs and feed on surrounding algae and...

2013 Schuchert P, ed. (2022). "Apolemia uvaria (Lesueur, 1815)". World Hydrozoa database. World Register of Marine Species. Retrieved 16 November 2022...

"Transcriptome Characterization of Reverse Development in Turritopsis dohrnii (Hydrozoa, Cnidaria)". G3: Genes, Genomes, Genetics. 9 (12): 4127–4138. doi:10.1534/g3...