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.
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