Identifying pests

NoviceAmber

Hi

Can anyone help me identify these pests on my aloe Vera plant? 
They're almost like mini slugs. 
I had them on a lime last year which is now outside. 

If you have any tips on how to treat them I would really appreciate it! 
Thanks 

Dovefromabove

Hi @NoviceAmber 😊  Can’t see them very clearly but google Scale insects ... there’s various sorts. If you think that’s what they are the info here should help
https://getbusygardening.com/controlling-houseplant-scale/

pot-man

Is it these ?