Marrus orthocanna Kramp, 1942
A large orange deep-water Arctic colonial jellyfish
Size
- colony length exceeds 1-2 m
- nectosome (swimming end) upto 10 cm
Color & Characteristics
- Red/orange with different hues on different parts of the body
- Physonect (gas float) yellow-orange
- Nectophores (swimming units) translucent with bright red canals.
Habitat
- Primarily Arctic, with records in the subarctic Atlantic
- Mostly mesopelagic concentrated between 200 and 800 m
- Bathypelagic records to ~2000 m
Feeding
- Animals swim, then pause and deploy tentacles creating a fishing curtain 30-50 cm from the body stem
- The diet is unstudied, but likely larger crustaceans such as decapods, krill and mysids, as well as copepods
Life cycle
- Holoplanktonic,
- Details, including generation time and life-expectancy unknown
Page Author: Kevin Raskoff & Russ Hopcroft
Created: Aug 20, 2010