What if...the world was one side of a mirror and the other side was the alternate world of spongebob and co. and in that world they do EXACTLY WHAT WE DO IN REAL LIFE...OH GOD THAT MEANS PEARL HAS NO MOTHER!!!
I think the greatest mystery is... Why is the sky blue? Yes, the greatest question of all. But really, who cares? That's my new mystery. 'Who cares?' Has a good ring to it. That's my new greeting from now on. FRIEND: Hi. How are you? ME: Who cares? I'm good. It'll be a perfect conversation topic also. Wow. I'm way off topic. Whoo! So I'll pick.................................. 'Why is the sky blue?'. That's my mystery choice.
It has to do with genetics. "Crab" is a recessive gene, and while both of Mr. Krabs parents passed this gene on to him, it didn't show up in Pearl's phenotype because her mother, Adele, passed the "whale" gene, which is dominant, onto her.