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Ragworms

size:

up to 40 cm

color:

all kinds of color: pink, brown, green

food:

small benthic animals

enemies:

shorebirds, fish, worm fishermen

reproduction:

sexual

  • Dut: Zager (zeeduizendpoot)
  • Lat: Nereis spp., Alitta virens
  • Eng: Ragworm (King rag, estuary ragworm)
  • Ger: Seeringelwurm
  • Dan: BÝrsteorm
King rag, foto fitis, sytske dijksen

Ragworms

Ragworms are predator worms with strong jaws; a large ragworm can produce quite a bite! They have lots of small legs, which explains why they are also called marine centipedes in Dutch. They emerge out of the bottom to mate in the spring. Deep-sea fishermen like to use ragworms for bait because fish like to bite into them. However, these worms are more difficult to dig up out of the mudflats, making them more expensive than lugworms. That is why ragworms are cultivated. There are various kinds of ragworms. The king rag can grow as long as 40 centimeters. The estuary ragworm grows to 20 centimeters.

On Texel


The king ragworm (Alitta virens), the estuary ragworm (Nereis diversicolor) and the catworm (Nephtys hombergii) are common on the mudflats by Texel. The estuary ragworm even lives on the landside of the dikes, in salty ditches by the Petten.

  • Distribution and habitat
    Estuary ragworm, Oscar Bos, Ecomare

    Ragworms live in tunnels which they dig†in the bottom of the Wadden Sea, the delta waters and North Sea, as deep as 30 cm.