Hank Green - Video where he teased a shirt design?

Hey !! Very simple thing I'm after, I can not find the video but I feel strongly that it exists. I remember watching a video, I believe on Hank's channel where he showed a design of an oarfish. I believe it was accompanied with "Everything we know is something we figured out" on it, although I may be misremembering this. I've looked through his videos, but haven't found it. I believe this was within the past 2-3 months. Does anyone know what video this may be from? Was it a temporary video!

TIA!!!