I don't think an alien will be a blob. If aliens are out there they should have evolved just like us. They should have eyes and be walking on two legs. In short if there is any life out there then it is likely to be very similar to us.

Simonetta) Cambridge University Press 1991. His studies on the Burgess Shale-type faunas as well as the early evolution of skeletons has encompassed a wide variety of groups ranging from ctenophores to the earliest vertebrates. org) that aims to provide an easily accessible introduction to the thousands of known examples of convergence.

The results of these discoveries were celebrated in Wonderful Life by Stephen Jay Gould. Morris's own book on the subject The Crucible of Creation however is critical of Gould's presentation and interpretation. Simon Conway Morris FRS (born 6 November 1951) is an English paleontologist who is best known for his detailed and careful study of the Burgess Shale fossils.