Data about Cephalopoda

TraitBank assembles data records from many providers. Select a row for more details about the record, or search within Cephalopoda.

Physical Description

Data about Cephalopoda
  • dimorphism
    Sexual dimorphism is a phenotypic difference between males and females of the same species. The prototypical example is for differences in characteristics of reproductive organs. Other possible examples are for secondary sex characteristics, body size and morphology, ornamentation and behavior.
Additional detail appendages
  • appendages
    appendages differ between males and females. Includes the number, size and shape of locomotory and sensory appendages such as antennae, legs, wings, and fins, as well as non-genital appendages modified to act as intromittent organs. Tail dimorphisms are not included.
Fairbairn, 2013  
Additional detail female larger Fairbairn, 2013  
Additional detail sexes shaped differently Fairbairn, 2013  
Additional detail dwarf males Fairbairn, 2013  


Data about Cephalopoda
Additional detail marine biome
  • marine biome
    An aquatic biome that comprises systems of open-ocean and unprotected coastal habitats, characterized by exposure to wave action, tidal fluctuation, and ocean currents as well as systems that largely resemble these. Water in the marine biome is generally within the salinity range of seawater: 30 to 38 ppt.
Environments - EOL project  
Additional detail ocean
  • ocean
    Continuous saline-water bodies that surround the continents and fill the Earth's great depressions.
Environments - EOL project  

Life History and Behavior

Data about Cephalopoda
Additional detail dioecious
  • dioecious
    Dioecy (Greek: "two households"; adjective form: dioecious) is characterised by a species having distinct male and female organisms.
Fairbairn, 2013  


Data about Cephalopoda
percent species currently described
Additional detail 54 Appeltans et al, 2012  
described (accepted)
Additional detail 761 Appeltans et al, 2012  
total unknown species (expert opinion)
Additional detail 650 Appeltans et al, 2012  
undescribed species present in museum collections
Additional detail 150 Appeltans et al, 2012  
undiscovered morphospecies (not yet collected)
Additional detail 500 Appeltans et al, 2012  


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!