A somewhat divergent opinion:

Possibly not safe for vegans

From the Avaaz page:

Octopuses are seriously smart. They can use tools and solve complex problems, and even feel pain, pleasure, joy and fear!

That’s why scientists are outraged by plans for the world’s first octopus farm in Spain , which would see a MILLION of these mostly solitary creatures crammed into tiny tanks every year, then killed painfully by being frozen alive in icy vats to feed the food market.

It’s torture on an industrial scale.

However, the natural octopus lifecycle is pretty scary to begin with:

Quoting from Steroid hormones of the octopus self-destruct system

After mating, females steadfastly brood their eggs, begin fasting, and undergo rapid physiological decline, featuring repeated self-injury and leading to death. Removal of the optic glands completely reverses this life history trajectory, but the signaling factors underlying this major life transition are unknown.

I don’t know how to evaluate the experience of an octopus having its optic gland removed, but I can’t imagine it is pleasant. However, I have experienced hypothermia and have read extensively on both the experience of advanced hypothermia and how to avoid it.

The claim that being frozen alive is “torture on an industrial scale” could only be written by a person who has never experienced more than a cold shower. Sure, jumping into a cold shower is shocking and unpleasant (unless you are a Wim Hof enthusiast), but if you ease your way into cold the real danger is that it is difficult to notice your limbs become numb, and advanced stages of hypothermia are described as warm and pleasant. People who die of exposure are often found naked, after having stripped off all of their clothes.

TL;DR: If you don’t want to eat animals, or just don’t want to eat animals that demonstrate signs of intelligence, that’s fine. The claim that the proposed farm will be especially unpleasant for octopuses does not pass the smell test, and may actually be marginally more pleasant then the natural life cycle.

Please make use of the “hide details” feature when replying to this, or DM me directly. I do not wish to cause distress to vegans.