Alien Concepts

I drew this last night, and I had some really good ideas to go with it, but I forgot what they were, so it'll be a little tough to explain this one.

The wheel things on most of them are their means of mobility, but those go mostly unexplained. And the honeycomb-pattern parts are bioluminescent. The blue parts are openings that lead directly into the core of the body, and can be used for various different things.

I had two other concepts that I didn't include here, because I couldn't come up with a solid idea of what they'd look like.