You know, it really depends on what you're trying to catch. Prodominately on the east coast, a fish called a Spot is the prime target with blood worms.
They are relatively small, the largest reaching around a pound or a little bigger. The delight with these little buggers is they gather in huge numbers and can be caught by the 5 gallon bucket load when they are in the area. A simple two hook rig on a 10 pound class rod and reel, and you're in business. Personally though, I find the artificial blood worms to be the best bait, way better than actual blood worms.
The above is called fishbites bag o' worms. (bloodworms) They run around 7 bucks a bad and they are searious bait. I'll tell you how good they are.................
The year before last I tried them serious for the first time. I parked my boat in the middle of the gaggle of boats where the spots were at. When I first anchored off, I noticed that there really weren't that many people catching fish, and I also noticed that the bulk of them were using live bloodworms. With that said, My son, father in law, and I rigged up with two-hook drop rigs and very small 1/4" square pieces of fishbites on each hook. Just as soon as our lines hit the water, we began catching fish, and it didn't stop until our lines got pulled in for the morning. No one around us catching much. You could tell they were getting pissed because they started re-anchoring to get closer and closer to your boat. They'd keep looking over to see what I was using for bait. The ones that were asking questions were the ones that were trying to push me out of the spot, so I lied and told them I was using big red chewing gum. LMAO!! Most of those guys were fishing for them to eat, I was fishing for them for bait. They are wicked tough fish and make a wonderful live bait. Every predator in the ocean eats spots. Personally, I don't think they are really that great to eat, but others swear by them. Go figure.[cool]
Anyhow, I think I veered considerably from your original question, so back to the grind. What ever eats bloodworms will probably eat earthworms. However, that won't always be the case. I know if reference to spots its true. When they start feeding, just about any offering will do, but it won't be as good as blood worms or the artificial stuff.
If you're going to fish off of a peir, I suggest small pieces of squid. If there are large sea bass or similar species off the peir where you're fishing, then up size your gear and use larger pieces of squid. Like spots, every thing in the ocean eats squid. It doesn't matter if you're in 300 feet of water offshore, or in 15' of water on a pier, you'll get bites. [
]
I hope this helps!
[signature]