Answer:
What is pronounced like one letter, written with three letters. And belongs to all animals?
Golden treasure I contain, Guarded by hundreds and thousands. Stored in a labyrinth where no man walks, Yet men come often to seize my gold. By smoke I am overcome and robbed, then left to build my treasure anew
A morbidlyยญ-named body of water
I am never quite what I appear to be. Straight-forward I seem, but it's only skin deep. For mystery most often lies beneath my simple speech. Sharpen your wits, open your eyes, look beyond my exteriors, read me backwards, forwards, upside down. Think and answer the question...
Voiceless it cries, wingless flutters, toothless bites, mouthless mutters.
Iโm grown from darkness but shine with a pale light. Very round I am and always a lady's delight.