[agumonkey]

I wouldn't say this behavior is part of intelligence, it's probably the first thing nature crafted in any life form. Unfamiliarity => move.

[EForEndeavour]

Maybe this one specific behaviour doesn't convince you of intelligence, but squids, octopi, and cuttlefish are among the most intelligent cephalopods, which are in turn the most intelligent known invertebrates.

[agumonkey]

Oh, I'm well aware of their prowess, it's been taped and discussed (also many more animals have more cognitive abilities than were thought before). I was just discussing this particular reflex/behavior.

[HenryBemis]

Is this worth eating or fighting (for) it?

I have no knowledge on how they identify/distinguish food over a rock, if the tentacles have some sort of receptors on them, but apparently this didn't "taste" like food, thus unworthy of eating or fighting for and therefore better safe than sorry.

[agumonkey]

Maybe something on the surface didn't mesh well with the succion-cups

[huis]

I don't know if this is true. Most simple animals are very curious.

If it doesn't move => go check it out.

[agumonkey]

well, the squid do check it out but it didn't like what he found