We know how water bears can survive space, right? What if those are commonly found on almost all planets because they can travel without special equipment and survive. Imagine if some critters are talking about indestructible things and a human mentions the tartigrade and they all just nod in agreement.
Alien Car'zthops: We need to make ship more durable, maybe indestructible. This human engineer should be able to guide us to it one day.
Human Amanda: Well, the only truly indestructible thing I can think of is a water bear (jokingly)
Alien Sylactha: What isss thissss... Water bear?
Human Amanda: Well, the scientific name is Tartigrade, but we call em' that.
Both aliens: Oohhhh (and nod in agreement
Human Amanda: ...You guys know what those are?
Alien Car'zthops: They aren't just a death world species, human Amanda.
