A predatory marine bristle worm which is frequently used as bait by fishermen.
（常用作鱼饵的）沙蚕
Family Nereidae: several genera and species, especially Nereis diversicolor
Example sentencesExamples
But researchers have found that both kinds of photoreceptors grow on a humble animal known as a ragworm, which is believed to have branched off very early in the evolution of bilaterians.
When things get tough, the best alternative option to attract the fish is King ragworm or the smell, flash and movement of a properly presented mackerel strip.
Lugworm and ragworm are also good, but tend to produce the smaller fish.
Anglers had a selection of baits with them lugworm, ragworm mackerel, sandeel and peeler crab to catch that winning fish.
Stray ragworm wound their excitable way to land, before diving below the sandy surface in fear of their lives.