What if Earth had no oceans?

Hello, fellow worldbuilders. The question is pretty self-explanatory. I'm curious to know what the Earth would look like if it had no oceans.<br><br>**Assumptions:**<br><br>* The Earth has no oceans or seas<br>* Landmasses are connected by tiny islands and rivers<br>* The average global temperature is about 15°C (59°F)<br>* The atmosphere is similar to that of Earth, with the exception of a slightly higher concentration of CO2<br>* The climate is generally dry, with some regions being more humid than others<br>* Weather patterns are similar to those on Earth, with the exception of sea-based weather events like hurricanes and typhoons<br><br>**Questions to consider:**<br><br>* What would be the effects on global climate and weather patterns?<br>* How would the lack of oceans impact the formation of continents and mountain ranges?<br>* What types of flora and fauna would thrive in such an environment?<br>* How would human societies and civilizations develop in the absence of oceans?<br><br>I'm looking forward to hearing your thoughts and ideas on this topic.