Read the whole strip at: https://thetortoisewebcomic.net/comics/27

[Image description: Captain Yrjö-Koskinen is floating in the air and pointing forwards, and says “Behold, professor! There’s my zombie!” Below them, professor Altort Einstoise holds a zombie gurgle translator thingamajig, a device with many small buttons and a wiggly funnel-shaped receiver. They say “I’ll translate its gurglings with my zombie gurgle translator thingamajig!” ]