Answer:
A caribbean shape that makes ships disappear
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.
What bird can lift the heaviest weight?
I am so simple that I can only point. Yet I guide men all over the world.
How can you burn an apple, blueberry, rose and pumpkin without leaving any ashes but retaining the smell of it?
People take me on walks and I run and have fun. What am I?