Planapo 63x/1.4, DIC, 390µm length, 20µm width, stacked and stitched in Photoshop, Marine sample, Alboran Sea
Found this crazy long diatom (which I believe is Synedra ulna) on a drying slide. One can see the drop of water that surrounds it.
Linked image is 1500 pixels wide in order to make some more details visible.
![Image](https://i.imgur.com/VdAKMwU.jpg)