The Tides and Other Interesting Relationships
Finally, one of the most important aspects of the Moon-Earth partnership is the Moon's effect on our tides. It is the main cause for the high and low tides experienced at beaches and harbors everyday around the world. This is obviously important to us, because with the tides go the fish and when the tides are low, the fishing is going to be poor in that area. If we know when the tides are going to change we can properly relay this information to fishermen so that they may efficiently do their business.
A secondary issue on this topic is the slowly increasing distance between the Moon and the Earth. Every year the Moon gets further from the Earth by about 1.5 inches, according to measurements taken using retroreflectors left on the lunar surface by Apollo 11 astronauts. This means that eventually its effect on our planet will be drastically different than they are now, which requires further study to ensure those changes aren't harmful to ourselves or the planet itself.
Another relationship between the Moon and Earth's oceans is the supposed effect it has on spawning cycles for various ocean creatures. A suggested theory on how and why corals mass spawn at specific times is believed to be because of the lunar cycle. Whether or not this is true is still up for debate, but it's one more effect which we've only recently discovered that the Moon has on our planet.
Through countless decades of research, we've gained a large catalog of knowledge about the Moon, arguably more than any other object in space, yet we still have more to find, all the more reason to grab your own telescope and peer up at that pearly, crescent rock in the sky, because who knows what you might learn about your own planet one day.