what proof is there that the sea can change formations?

Which formations?

Please explain.

land formations.

As the sea level rises, it encroaches on land and soon the beach is submerged. Or when the sea level lowers, we have larger stretches of beaches.

Sand bars are also proof that the sea can change land formations.

Will this answer also work:

Depending on the wind powers or the waves and tides?

That doesn't show proof.

To find proof that the sea can change formations, you can refer to scientific studies, geological research, and documented evidence. Here's how you can go about finding this information:

1. Scientific Studies: Search for peer-reviewed scientific articles on marine geology, oceanography, and coastal studies. Scholars and experts conduct research on the sea's geological formations and changes. Online platforms like Google Scholar or research databases like PubMed can be valuable resources for finding relevant scientific studies.

2. Geological Research: Look for studies conducted by geologists who focus on marine environments and study the processes that shape the sea. These experts investigate various phenomena such as coastal erosion, sedimentation, and tectonic activities affecting the sea floor. Geological surveys and reports from coastal regions can provide insights into changes in the sea's formations over time.

3. Documented Evidence: Historical records and observations can also offer evidence of changing sea formations. Look for eyewitness accounts, photographs, and historical documents that describe changes in coastal areas or islands. Historical archives, local libraries, or online databases could have such information. Additionally, government organizations and coastal management authorities often monitor and document coastal changes and erosion processes.

It is important to critically evaluate the credibility and reliability of the sources you find. Peer-reviewed scientific articles, reputable geological surveys, and well-documented historical records are generally more reliable sources of evidence.