Snails bleach?

[El Chakas]

I noticed some of the snails and hermits look like they bleached. Any idea what it might cause this or what it is?

[Livinlocal]

Are all of the snails like this, or just some of them? Looks like the algae that was on the snails had a die off. I would guess from a lack of nutrients, or possibly that they were in a crevice under a rock that received no light, which would make the algae die off.

[Livinlocal]

Also, a Lot of snails will clean each other. Meaning; one snail would clean another snails shell.

[El Chakas]

I did have an algea outbreak so possible. But yeah about 80% of them are like this