Answer:
A caribbean shape that makes ships disappear
I’m a word, six letters long; I sometimes enter with a gong. All in order from A to Z, I start with the letter B. What is the word?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
Bold are the first; true are the second; playful are the third; clever are the fourth; forceful are the fifth.
My life can be measured in hours, I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
What is lighter than what it is made of?