Bible, like any book, can be seen from many perspectives. Depending on your own life, you will perceive it as an actual meaning or an allegorical representation of concepts.
Bible is not about the garden of Eden and its biological fauna.
Nor is Bible about the mechanism of how Jesus walked on water.
And Bible is certainly not about the anatomical Resurrection of human body after organ failure.
Bible speaks in allegories, written so that as time passes by people would be able to apply their future knowledge of science to understand the meaning behind the lessons that Bible carries within.