narcissus eggs hatched i think

my narcissus snail laid eggs on the glass and now there are little tiny things moving around the eggs.. they are tiny and move pretty fast but are only around eggs. do you think the hatched? the only thing that could eat them are other snails or my sand sifting starfish... i have 2 clowns the only fish i have and they stay around their home on the other side of tank...
 
but now im not sure what they are running on the glass cuz now i see tiny worm like things all on the glass and they move... i dont have any bristleworms any where in the tank that i have seen...
 
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