Olm are salamanders that spend all their lives in pitch-black caves, and it turns out they don’t move very much – sometimes lurking in the same spot for years
Source:
https://www.newscientist.com/article/2232176-a-lazy-cave-salamander-didnt-move-from-the-same-spot-for-7-years/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home