Answer:
Big as a biscuit, deep as a cup, but even a river can’t fill it up. What is it?
My first is equality; my second is inferiority; my whole is superiority.
What surrounds the world, yet dwells within a thimble?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
Long and slinky like a trout, never sings till it's guts come out.
A word of five letters, Upside down is the same, A shark does this, But it’s not to blame. What is the word?