I drove a fellow lab-mate to collect samples from the bedwell bayfront park. I did some collections myself and observed the most bizarre diatom that I have ever seen. I’m calling it a tetrahedron but not sure if that’s right. If anyone can help id this  beast,that would be much appreciated!

I first saw this from the side and thought it was a helminth egg, until it started to rotate. See video!

Here are a bunch of other diatoms and images from the site so you have a feel for the site and biodiversity around.