Polymastia (sponge)
Encyclopedia
Polymastia is a genus of sponges (Porifera) containing about 30 species. These are small to large encrusting or dome-shaped sponges with a smooth surface having many teat-shaped projections (papillae). In areas of strong wave action, this genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 does not grow the teat structures, but instead grows in a corrugated form.

The image depicts Polymastia pachymastia, often called "aggregated nipple sponge", a species found off the coast of northern California.

Its species include:

  • Polymastia agglutinans
  • Polymastia aurantium
    Polymastia aurantium
    Polymastia aurantium is a species of demosponge belonging to the family Polymastiidae. It is found in intertidal habitats including tide pools in the vicinity of Auckland, New Zealand....

  • Polymastia bicolor
  • Polymastia boletiformis http://www.imagequest3d.com/cgi-bin/ImageFolio4/imageFolio.cgi?action=view&link=aquatic/porifera&image=JMG00329.jpg&img=&tt=
  • Polymastia bursa
  • Polymastia conigera
  • Polymastia crassa
  • Polymastia craticia
  • Polymastia croceus
    Polymastia croceus
    Polymastia croceus is a species of demosponge belonging to the family Polymastiidae. It is found in subtidal habitats below 6 m depth in the far north of the North Island of New Zealand....

  • Polymastia echinus
    Polymastia echinus
    Polymastia echinus is a species of demosponge belonging to the family Polymastiidae. It is only known from shallow subtidal habitats off Goat Island in the far north of the North Island of New Zealand....

  • Polymastia fusca
    Polymastia fusca
    Polymastia fusca is a species of demosponge belonging to the family Polymastiidae. It is found in shallow subtidal habitats in the far north of North Island, New Zealand....


  • Polymastia granulosa image
  • Polymastia grimaldi
  • Polymastia hirsuta
    Polymastia hirsuta
    Polymastia hirsuta is a species of demosponge belonging to the family Polymastiidae. It is found in various subtidal habitats in the far north of North Island, New Zealand.This is a usually circular sponge up to 7 cm in diameter...

  • Polymastia inflata
  • Polymastia invaginata image
  • Polymastia isidis
  • Polymastia lorum
    Polymastia lorum
    Polymastia lorum is a species of demosponge belonging to the family Polymastiidae. It is only known from a single specimen found attached to a dead Glycimeris valve on a reef near Ohinau Island, one of the Mercury Islands off North Island, New Zealand....

  • Polymastia mamillaris
  • Polymastia massilis
  • Polymastia megasclera

  • Polymastia mespilus
  • Polymastia penicillus http://www.habitas.org.uk/marinelife/species.asp?item=C2610
  • Polymastia pepo
    Polymastia pepo
    Polymastia pepo is a species of demosponge belonging to the family Polymastiidae. It is a common species of rocky subtidal and intertidal habitats in the far north of North Island, New Zealand....

  • Polymastia rubens
    Polymastia rubens
    Polymastia rubens is a species of demosponge belonging to the family Polymastiidae. It is only known from rocky subtidal habitats around Kawau Island off North Island, New Zealand....

  • Polymastia spinula
  • Polymastia tapetum
    Polymastia tapetum
    Polymastia tapetum is a species of demosponge belonging to the family Polymastiidae. It is found in shallow subtidal and intertidal habitats in the far north of North Island, New Zealand....

  • Polymastia thielei
  • Polymastia uberrima
  • Polymastia umbraculum
    Polymastia umbraculum
    Polymastia umbraculum is a species of demosponge belonging to the family Polymastiidae. It is only known from rocky subtidal habitats around Kawau Island off the North Island of New Zealand....

  • Polymastia zitteli
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