on a visit to a beach along the Atlantic Ocean and I noticed that sometimes the water was closer to her feet and hours later it was for her father told her that this difference was caused by the ebb of what is the main cause of the ocean tides​

tides

Explanation:

The gravitational pull of the moon and the sun, combined with the rotation of the earth, is what makes the sea come in and go out each day. It’s the gravitational effect of the moon as it orbits around the earth which ‘pulls’ on the oceans, pulling the water towards the moon to create a high tide.

im honestly not sure but i might be right