Finless Porpoise at Miyajima Aquarium, Japan.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/25035545@N04">ori2uru</a>
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originally posted to <b><a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a></b> as <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/25035545@N04/2523819797">Finless black porpoise</a>