What is this?

[Jessicaphan008]

Got this from someone who didnt know what it was either. It has no leg the underneath part looks like a snail, topped with foldable armor???

[Ratvan]

Looks like a Chiton, could not tell you what type

[Jessicaphan008]

Is it something that would benefit an aquarium?

[Ratvan]

2 minutes ago, Jessicaphan008 said:

Is it something that would benefit an aquarium?

As far as I know eats algae, some do eat coralline. I'd keep it myself, cool little hitch hiker

[Snow_Phoenix]

It's a chiton. Usually you get them as hitchikers. 

[WV Reefer]

Very cool. I would keep it. 😊

[Tired]

It's a chiton, and looks like a fairly large one. Chitons are a sort of primitive ancestor of the snail, and pretty much act like flat snails. They eat algae, so if you need something that eats algae, they're beneficial. 

[RoyalGramma001]

It’s a type of chiton. They are good for the tank, not harmful.