Hello how may I help you? I want to know, what is the biggest ocean? The largest ocean is the Atlantic Ocean! What's the smallest then? The smallest is the Pacific Ocean. Okay, another question: what is the tallest mountain? The tallest mountain is Mount Everest! Anything else you'd like to know? Cool. Nothing else right now. You sure? Okay, thanks for your inquiries. Yes. Thanks for the answers. No problem!