sewer urchin;945276 wrote: the way you can tell is to lick them. If it's spicy then it's a fireworm!
-just for the record, i'm kidding around. Licking any wildlife is a really bad idea and just might get you hurt. Heck, i get pretty paranoid about swallowing siphon water so i sanitizing everything by taking a few shots of vodka!
Oh jenn's right...looks like a bristleworm.