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Luisa Borges. Universidade do Minho. Luisa Borges. Year: 2012. Contact: luisa.borges@bio.uminho.pt; luisaborges2000@yahoo.co.uk.   cc-by-nc-sa-3.0

Janiridae is a family of isopods. They rely on drag powered swimming to move around.

  • URI: https://eol.org/schema/terms/drag_based_swimming
  • Definition: Drag swimmers use a cyclic motion where they push water back in a power stroke, and return their limb forward in the return or recovery stroke. When they push water directly backwards, this moves their body forward, but as they return their limbs to the starting position, they push water forward, which will thus pull them back to some degree, and so opposes the direction that the body is heading. This opposing force is called drag. The return-stroke drag causes drag swimmers to employ different strategies than lift swimmers. Reducing drag on the return stroke is essential for optimizing efficiency.
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EOL has data for 30 attributes, including:

Known occurrences, collected specimens and observations of Janiridae G. O. Sars 1897. View this species on GBIF
Luisa Borges. Universidade do Minho. Luisa Borges. Year: 2012. Contact: luisa.borges@bio.uminho.pt; luisaborges2000@yahoo.co.uk.   cc-by-nc-sa-3.0

Janiridae G. O. Sars 1897 Habitats

The environments in which many Janiridae G. O. Sars 1897 species are known to live. Select an environment to see its Janiridae G. O. Sars 1897 species checklist.