Hi
First, thanks for your courage to describe such happening.
So size estimation is 80 feet or more??
How fast it proppeled itself downwards? Around 80 kmh??? How can you estimate this speed?? Did (when it proppeled itself downwards) the ejection of water produced bioluminescent reaction on plankton ( whitish clouds) because of all that water pressure or maybe was the defensive bioluminescent fluid of the «squid»?
The «red glowing mesh» passed through an white glowing ring ( phosphorescent plankton)??? It had red glowing photophores between the lines or only light on those lines? It flashed or it kept all the time on ( though it´s intensity varied)? It was glowing white from both sides on the tentacles area or the white light was spread all over the area?
When that suddenly stopped to glow how did you knew about what it was doing, if as you said, that was a dark moonless night? I´m trying to imagine the light producing 2 bigger tentacles, as for the Watasenia scintillans, but in a much bigger scale.
Do you have longitude and latitude informations of the sighting?
There´s a deep canyon near Nazare ( Nazare Canyon) which can host strange abyssal creatures, there is also uppwelling phenomena which increases the chance of seing luminous deep sea creatures at night as well as the number of species, but your descriptions go well far beyond my comprehension, I´m sorry. I have seen myself really strange things ( passing many nights in remote places doing field research), of course that they were QUITE few, so I respect your report, but is hard to believe that was a giant or colossal squid... It sounds almost like an unknown animal, what did really leaded you to think that was a squid? I have been puzzled with scientific data about bioluminescent marine live beings, with many colors described already ( purple,pink,orange,red,yellow,blue,green, white(?)), some as strange as a shark covered with blue photophores, viperfishes with different colored light organs or a red glowing jelly fish, so I´m opened to accept different things, though your descriptions sound quite hard to understand.
Some scientific references suggest that some colossal squids are bioluminescent and that some unknown animals in the abyss may glow quite readily a LOT, so maybe you can offer more details about your report. I do remember to see a video with firefly squids and their 2 bigger tentacles can be quite brightly luminous and to read some descriptions or stories about very big squids glowing blue or green that approach boats at night , some were said to be HUGE indeed and some are said to have glowing eyes ( backed up by more recent studies about light organs located on their visual organs) which can be a bit scary, but certainly interesting and amazing to see, at the same time.
This lead us to the fact, that some ancient stories have some interesting true on it.
http://www.pnas.org/content/19/1/178.full.pdf?ck=nck
Very interesting the report, at page number 186 on 875 feet dive.
And here one story:
http://academic.scranton.edu/student/taglem2/facts.html
PS: We only know about 1% of the deep sea, having in mind that all the rest is still undiscovered and that 1 % is still producing surprises all the time, that remind us how hard is to understand this subject.