The biblical account of Noah and the Ark has been reduced to a cartoon and then scoffed at and ridiculed by secular humanist of our day. The irony is that secular humanist are quick to teach and believe that life began from a primal source. And yet they can't see or refuse to see in the Noah account the biological verity of that very concept.
Another argument they make is that all the varieties of specie that exist could not fit within such a closed confine as an Ark. The account is clear though that Noah chose male and female of each kind and not from each variety of that kind. Modern man does that very thing with our local Zoos. We gather animals into enclosed spaces for our entertainment and amusement. One can ask any Naval engineer and they will tell you that they can float a Zoo if they were commissioned to do so.
As we learn in nature the seed contains life with all of its life producing potentiality. Life compacted in the seed springs forth by the life sustaining elements of water, earth and the sun. Thus Noah's Ark is symbolic of a seed with all of its life producing potentiality. Noah's Ark as a seed burst forth full of life all that we see today after being nourished by the sun, water (the flood) and the earth that it settled in. Producing great varieties of more seeds as each and every seed has the potential of doing. Filling the earth with life. Thus the biblical account of Noah and the Ark is both literal and figurative.