I would say we're seeing tentacles as "a lot of dark reddish matter" in the above pic. The previous ones I posted (that's Thysanoteuthis, obviously...) are also from the same japanese site, just click on the arrows at the bottom, lots of T. rhombus, billfish and the occasional small oarfish.
The rusty red pic used to be on the previous incarnation of this page, in between the arrow squid and Architeuthis: it always intrigued me, showed a large mantle, large fin, tiny eyes squid that was apparently a spent female Moroteuthis. It disappeared from the site, for a while still showing the "broken" icon. I really wanted to see that picture once more to see how it would teach me anything on Meso's ocular appearance.
The high res pics I was referring to to you, are the ones you linked to earlier: I was simply curious whether there were any more high res versions of the big thumbnails.
A right treasuretrove this turns out to be!