So, I'm a college student (background information) and have the crabitat on my desk. Whenever I do homework I pull out the other part of my desk (right in front of the crabitat) and just place my laptop and do homework! I always play music, but not too loud because of the crabs (Buoy &Marina). And I've noticed something...
My hermit crab, Buoy ALWAYS comes out when I play music.
Scratch that, he comes out when I play music from Undertale now it might seem silly...but its true.
By come out I mean he comes towards me and just sits. And looks at me. And just plays?
Now whenever I play any other type of music, he will not do this..
So I'm guessing Buoy is a fan of Undertale?

PS its a really good game.