Help! Vermetid cob webs!

Ive been noticing these little cob webs strung all across my live rock lately. Like a little water breathing spider ******* that decided it would be funny to make a home in my tank. I decided to do some research on this seeing how im pretty sure there are no spiders that live in saltwater (maybe fresh but def not salt lol). And i found several pictures of exactly what looks like is going on in my tank, and its starting to get on my OCD! From the looks of it i have some type of snail making these slime trails, or webs, or whatever the heck they are, and the type of snail that is said is a vermetid snail. I looked at pictures of these guys and they seem to have no shell, although i dont see any in my tank anywhere and ive never had snails in my tank before only hermits, so im a bit confused. What do i do?!?! Before i call the exterminator about some water breathing fish spiders!