<i>Pinnoctopus cordiformis</i>
<bdi><a href="https://en.wikipedia.org/wiki/en:Ernst_Haeckel" class="extiw" title="w:en:Ernst Haeckel"><span title="German biologist, naturalist, philosopher, physician, and artist (1834-1919)">Ernst Haeckel</span></a>
</bdi>
1904
close up <a href="//commons.wikimedia.org/wiki/File:Haeckel_Gamochonia.jpg" title="File:Haeckel Gamochonia.jpg">here</a>