The sea is a very narrow channel of water. We can see it as a very narrow channel of water. The sea is so shallow that it can be easily seen in the daytime, and you can see it from space. The sea is very shallow, and the ocean floor is constantly being eroded by the erosion of the sand and rock that surrounds it. The ocean floor is constantly being eroded, but there is still a bit of water left. That water is a bit narrower than the sea.
This narrow channel of water is a bit of a theme because it is, in fact, a narrow channel of water. The ocean floor is constantly being eroded by the erosion of the sand and rock that surrounds it, and all the water in the sea is constantly being eroded.
The fact that the ocean floor is constantly being eroded by the erosion of the sand and rock that surrounds it, and all the water in the sea is constantly being eroded, is a theme, because all the water in the ocean is constantly being eroded. This is true of oceans everywhere.