How many alien species would be in the Alien-Prometheus universe?

Annunaki- the Morb! You rock! Anyways, given what we see in Alien and particularly in Prometheus, there could be an endless variety out there, mutation upon mutation, given the reproductive nightmare of the Morb, the unlikelihood of the Goo ever being contained and the havoc one drop can wreak. As to "natural" versions of the beast, there could be only one, or a whole disgusting zoo of them on some planet-sized toxic waste dump where sanity goes to die.

Oh yeah Morb sounds creepy and horrible that would be scary to have them all living on some planet with only one type of animal creations running around making more and more of themselves.

Yes. Unbridled genetic offenses. The most terrible forms imaginable. The source of all nightmares throughout the universe.

There are 1,000's of distinct species, from which the mutations take place. The notion is that Prometheus gave fire to man, to make man equal with the gods, and he was banished; and in the movie, fire is the ability to create life. Shaw is the recipient of the gift, the first human to use it--and that's what I think she'll do a lot of in the sequel(s).

The predators :D JK. But surely there are many lifeforms in the mind of a screenwriter waiting to be invented ;)