no its not a hominid it is a nomad
humans and other creatures that walk upright are called
Hominids
yes it can be aggressice with it's other fellow creatures.
because humans and other sea creatures are eating them
No, humans were formed from the dust of the Earth and were the first living creatures. Fish are a whole other species.
no sea creatures have limbs and the other animals and humans have legs
i believe we all have a spirit
Spore creatures cannot be permanently invisible, there's an ability called sneak that lets you temporarily be invisible to other creatures other then your own.
i guess
yes especially if you tred on them then you are there predator but they do have other predators that are creatures
Cannibals
Well assuming there are other intelligent living creatures in the universe, they would refer to other intelligent living creatures in the universe (which can be us) as a word in their language that has the same meaning as aliens. So, yes, for other intelligent living creatures in the universe. But that doesn't mean if we didn't live on a planet we wouldn't be aliens. Because we would still be other intelligent living creatures in the universe for other intelligent living creatures in the universe. And yes, I used copy/paste for other intelligent living creatures in the universe. :) By the way, you refer to humans as "them". Doesn't that make you and alien for us? :P