Snagged this at a gig Intronaut played last year in Las Vegas at a place called The Dive Bar. This was a couple days after The Direction of Last Things was released, which if you don't already have you should go give it a listen, it's rad.
The band killed it, especially Danny Walker who has played drums on many an excellent record from bands like Phobia, Exhumed, Murder Construct, etc.
In typical fashion for Intronaut, I have no real idea of what is on the shirt. I'm actually surprised it isn't a dolphin like pretty much all of their other merch. The artwork itself is a really nice print on a dark grey shirt with a retro sort of logo for the Intronaut name.