Books to read on this subject
Michael Behe's "Darwin's Black Box"
This book is a biochemist's attempt to provide argument for God using the familiar 'Pocket Watch' method devised by William Paley (who wrote 'Natural Theology - or Evidences of the Existance and Attributes of the Deity Collected from the Appearances of Nature'). He argued that a watch is more intricate than a stone. Therefore, 'works' of nature are obviously designed objects since they in turn are more complex to '..a degree which exceeds all computation'. Another famous argument is the airliner-from-a-junkyard one invented by Fred Hoyle.
However, Behe's book relies almost entirely on 'I can't understand it so it must be down to God' principle. Although I would love to use this in exams ('I would answer this question, but unfortunately only the Supreme Being has the answer') It doesn't really pass muster.
A better read by far is, of course, Richard Dawkin's 'The Blind Watchmaker'.
As for Squid being the chosen species, I prefer to think Octopi are the Maker's choice since they are highly intelligent but have 8 arms. How cool would that be?