According to the Bureau of Reclamation, water covers about 71% of the Earth's surface. Everything from microbes in the ocean releasing greenhouse gases into the air, to the immense amount of water that gets evaporated and rained back into the ocean, what would Earth's climate and ecosystem by like if it was land covering 71% of Earth's surface instead?
My guess is that at the very least, season's would be very different across the Earth but I am not sure how. I think there would be no such thing as hurricane season (or typhoon season in the Pacific) and rain would be much more rare on Earth. This could potentially lead to agriculture being much more difficult and possibly increasing the temperature on Earth dramatically since water cools things down but there is not much water on land to support that.
Would Earth still be habitable? If so, would temperature, humidity, and the weather still be as we know it? Or would Earth be a dry Sahara desert-weather-planet much like Mercury?