Snails without lids

[reelss]

I am swapping my display tank and am setting up a temporary tank until things get settled. Its a 20 long, with several corals and no fish.

I will be moving my inverts to this tank, and do not plan on adding a lid.

I only have snails (trochus, bumble bee, ninja stars, cerith) and one single emerald crab. Can any of these get out of the tank?

 

[Instigate]

I've never kept bumble bee or ninja but the trochus, cerith and emerald crab will be fine with no lid.