Contemplating the tomb of King Mun-Mu, reportedly the only underwater tomb in the world.  East coast of South Korea.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/82328924@N00">Jo</a> from Brisbane, Australia
CC BY 2.0
<p><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/82328924@N00/2326788940/">A day at the beach</a>
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<ul><li>Uploaded by <a href="//commons.wikimedia.org/wiki/User:Caspian_blue" title="User:Caspian blue">Caspian blue</a></li></ul>