Let's be clear:
1) the earth and its life-forms were not created in 7 24-hour days - it's a great story, a poem, a metaphor, a song and a dance, but it's not science; it's faith, and a good faith at that.
2) There never was an ark, though the ancient world seems to remember a cataclysmic flood in the eastern Mediterranean region. The story is an ancient writer's reflection on God decision to create a most befuddling critter. Or what we might call "buyer's remorse."
3) Neither fish nor whale swallowed Jonah - he was swallowed by his own hatred of Israel's enemy and his refusal to contemplate the fullness of God's love. It's Hebrew Theater at its story-telling best.
4) Virgin birth? Heck, lots of heroes, rulers and saviors, in the ancient world were born of a virgin. It's a device, a metaphor, to underscore God's hand in such things. But literal? Believe it if you want. But hold it lightly.
Enough for the day ...