Oceaniidae

Oceaniidae is one of the over 50 cnidarian families of the order Anthomedusae. It contains nearly 50 species in ten genera.[1]

Oceaniidae
Turritopsis life cycle. Two branches from the tree-like colony are shown, with a feeding hydra (A) the tip of each twig. Buds at the base of the hydra (at B) eventually detach and grow into adult jellyfish (K)
Scientific classification
Kingdom: Animalia
Phylum: Cnidaria
Class: Hydrozoa
Order: Anthoathecata
Suborder: Filifera
Family: Oceaniidae
Eschscholtz, 1829[1]
Diversity
9 or 10 genera,
40+ species

Genera
  • Corydendrium (11 species)
  • Corystolona (monotypic)
  • Merona (5 species)
  • Oceania (6 species)
  • Pachycordyle (disputed)
  • Rhizogeton (7 species)
  • Similomerona (monotypic)
  • Tubiclava (5 species)
  • Turritopsis (11 species)
  • Turritopsoides (monotypic)
Corydendrium parasiticum, Stalk section of colony showing branching pattern, magnification × 8. br. = branch, coen. = coenosarc, n.t.1/2/3/4 = new tubes enveloping a branch from a coenosarcal strand and wedged in between older tubes, peri. = perisarc, ram.1/2/3 = short bearing hydranths, st. = stem.
gollark: Really, relying on these arbitrary divisions in the first place is stupid.
gollark: No, I mean it could give one or the other a non-population-related advantage due to differences in the geometry of some kind.
gollark: I guess it's possible that even one which doesn't know about parties might accidentally be biased due to (hypothetically, I don't know if this is true) one party being popular in low-density areas and the other in high-density, or really any other difference in locations.
gollark: You don't actually need simple shapes very badly as long as you have an algorithm which is not likely to be biased.
gollark: Okay, rearrange the states so they're square.

References
  1. Peter Schuchert (2012). Schuchert P (ed.). "Oceaniidae". World Hydrozoa database. World Register of Marine Species. Retrieved November 29, 2012.


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