“The tides are one of the most important ways that the Moon affects life on Earth. They are the result of the fact that the Moon's gravitational pull does not affect all parts of Earth equally: The lunar gravity exerts a stronger pull on the parts of Earth that are closer to the Moon.” (Astro Society). Tides are long period waves that roll around the planet as the ocean is pulled back and forth from the gravitational pull of the Earth and Sun. The spring tides occurs twice a month all year long whehttp://oceanservice.noaa.gov/facts/springtide.htmln the gravitational pull of the Sun and Moon combine, which has the biggest effect on Earth. Neap tides occur twice a month all year long when the Sun and moon are at right angles to each other. This is important to know because it impacts our daily lives. Ship navigators measure these tides so we know when it is safe to sail in certain water. Engineers need to know about tides for harbor engineering projects to construct bridges and docks. Scientists who study habitats need to know tides and current water conditions to do habitat restoration projects. Tidal data is important for fishing, recreational boating, surfing, and other water sports. Fisherman use tidal knowledge to improve the amount they catch on their outings because certain species gather in particular areas due to tidal effects.