In December, Tom got several larval squid from the Hopkins marine station.  (shoutout to dianateuthis!) They were only about a millimeter or two in length but fairly active, so we decided to image them using the Foldscope.  We also wanted to try out a new imaging station I’ve been working on to pair with the Foldscope for thicker samples like this one.  Tom prepared a glass slide with a cover slip held up with four small balls of clay.  We placed the squid in a drop of water between the cover slip and the glass slide.  The height was enough to keep it ever so slightly pinned, but definitely not squished.

I used an iPod Touch to capture these images and videos.  I was only vaguely familiar with squid anatomy, so it was very exciting to see the chromatophores firing, the tentacles moving, the heart beating, and the gill structures.