Turbo Snail Strange growth ID please

[Mahawka]

This Turbo snail has a lot going on in his life. One of my RBTA split off and has been living on his shell for a week now. Interestingly enough I found something else on his shell today. Could someone please ID this thing for me? Thanks

This thing has a long white webbed tongue. It shoots out every few seconds. Does anyone know what this is ? and is it safe for my tank ?

https://www.youtube.com/watch?v=xqodAM4zs9I&feature=youtu.be

[Christopher]

Looks like a barnacle.

[daplatapus]

That's a traveling zoo, right there :)

[gregzz4]

Can't see in your vid, but could be a barnacle
Could also be a limpet, or another kind of snail

Poor guy has a lot of action going on ... guess he's got some stamina :lol: