Seven-arm Octopus
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| Seven-arm Octopus | ||||||||||||||
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| Haliphron atlanticus Steenstrup, 1861a |
The Seven-arm Octopus (Haliphron atlanticus) is a large rare type of octopus.
It is so named because in males the hectocotylus (a specially modified arm used in egg fertilization) is coiled in a sac beneath the right eye. Due to this species' thick gelatinous tissue, it is easily overlooked, giving the appearance of just seven arms.
External links
- Tree of Life Web project (http://tolweb.org/tree?group=Alloposidae&contgroup=Argonautoid_families)
- CephBase (http://www.cephbase.utmb.edu/spdb/speciesc.cfm?CephID=700)