I have a mouth but never speak A neck that bends without bones I dive where hunger leads the way Yet drink without a thirst of my own I hold world in shallow curves Give comfort, medicine and heat Empty I wait fulfilled I serve I am that never eats

I wear many coats though I’m not for the cold, I make strong folks cry, though I’m timid and old. Chop me to bits, I’ll still flavour your bowl

I hold you up, but can't take you around Weak men lack me, but strong men wear me down The books you read, all have great need You can crack me, but never break a piece

Wide optics engage, Capturing all horizons, Vision machine’s sweep.

My first three can hold a lot of water. But drop me into water, and I explode. What am I?