Fighting conch and hermit crabs

[slay diggity]

Her is a video of my fighting conch doing what it does to my hermit crab, my question is what are the 2 hermits doing?
Fighting conch and 2 hermits - YouTube

 

[Sully]

Well, this is just a crazy guess but don't conch eat snails? If so, they may be waiting for the conch to expel an empty snail shell looking for a new home? There's a video on the side when viewing your video on youtube that shows this.