What would happen if there were no longer any ocean tides?

Besides navigational and biological impacts which I can't really speak to, it would have a large impact on ocean heat content and transport. Tides generate strong, large scale internal waves in the ocean. read more

So, from a very broad view, without tides and tidal mixing, the depth of the ocean thermocline, and thus its heat content and circulation, would look very different without tides. read more

5. Without a moon the tilt of our earth's axis would vary over time. This could create some very wild weather. Right now, thanks to our moon, our axis stays tilted at twenty-three point five degrees. But without the moon the earth might tilt too far over or hardly tilt at all leading to no seasons or even extreme seasons. read more

There would also be no ocean tides. The sky during the day would be less bright because ther is no moon. read more