If it comes with vitamin c i know who that seller is lolhaha good
if they are medusa worms though ...they are good
https://www.advancedaquarist.com/2002/11/inverts
and sells 32 bucks each
https://www.thatpetplace.com/Euapta-medusa-worm-206654
I had tons of those back in the day... Never an issue... I'm sure there are many many more under sandSo I picked up a piece of coral and these where in the bag are they good or bad ? Never seen them before