Night time small white snail like rising in many onto the glass from the substrate?

[Finsky]

I have a seen at night on my glass of my year and half 120 reef tank with fish at night small white snail like creatures and small white starfish like creatures from the substrate?

What are these two creatures?

 

[Grins]

The stars are probably asterina, and the white snails...could be stomatellas or even flatworms.