ID request please 2

[NZken]

Hi there

This is other octopus. I took these picture same place at Jones Bay, Tawharanui Peninsula which about 60km north from Auckland.

size: head to leg 30cm

He was in the Hose mussel at 4m deep water. Water temperature was 19 degrees. I took this photo at 16th December 2009.

 

[DWhatley]

I ampretty sure on this one that it is NOT O.gibbsi because of the white underside of the arms but that does not help with what it is.