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Biology

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Peacock worms often occur in large numbers. They provide habitats for other marine species, and may be found with sponges, seaweeds and ascidians (sea squirts) attached to them (3). Tiny hair-like structures on the tentacles known as 'cilia' filter suspended particles from the water. These particles are then sorted according to size; small ones are eaten, large ones are discarded and medium-sized particles are added to the top of the tube with mucus in order to increase its length (3). In this species, the sexes are separate (some worms are 'hermaphroditic'), and breeding takes place in spring and summer (3). Unlike the sedentary, attached adults, the larval stage is planktonic, drifting in the sea for a time before settling on the substrate (3).
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Conservation

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No conservation action has been targeted at this species.
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Description

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The peacock worm (also known as the fan worm) (1) lives in a tough, membranous tube, which is covered in particles of mud (3). This flexible tube may reach up to 10cm above the sand (2). The head of the worm emerges from the tube in order to feed; a beautiful crown of feathery tentacles banded with purple, brown or red (3) is extended during feeding (2). The body of the worm, hidden by the tube, is greyish-purple or yellowish orange in colour (3).
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Habitat

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Occurs on stones in mud and sand (2) on the lower shore and below (3).
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Range

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Has a wide distribution and is common in many areas around the coastline of Britain (2). It is also widely distributed around the coasts of north-west Europe (3).
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Status

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Common and widespread (2).
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Threats

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Not currently threatened.
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Brief Summary

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Worms can be absolutely beautiful. With a name like peacock worm, you've got to be lovely! The long smooth tubes are attached to stones or pontoons, standing freely in the water (as opposed to in reefs). The crown of very colorfully banded tentacles which the worm uses to catch plankton is actually what makes this worm so pretty. When disturbed, the worm retracts this crown very rapidly.
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Sabella pavonina

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Sabella pavonina, commonly known as the peacock worm, is a marine polychaete worm belonging to the family Sabellidae. They can be found along the coasts of Western Europe and the Mediterranean. It is found in shallow, tidal waters with a bed of mud, sand or gravel. It is sometimes found on rocks or shipwrecks.

It is 10-25 centimetres in length. Its body is elongated and divided into 100-600 small segments. The head has two fans of feathery tentacles arising from fleshy, semi-circular lobes. The body is mostly grey-green while the tentacles are brown, red or purple with darker bands.

The worm lives inside a smooth tube of fine mud or sand particles held together with mucus. The tube stands upright with the lower end attached to stones and the upper end protruding from the sea bed. When covered by water, the worm extends its tentacles out of the tube to feed by filtering out small food particles.[1] At low tide or when disturbed, it withdraws back into the tube.

References

  1. ^ DK Publishing (17 January 2011). Animal Life: Secrets of the Animal World Revealed. DK Publishing. p. 195. ISBN 978-0-7566-8886-8.
  • Barrett, John & Yonge, C. M. (1977) Collins Pocket Guide to the Sea Shore, Collins, London.
  • Forey, Pamela & Fitzsimons, Cecilia (1994) Letts Pocket Guide to Sea & Seashore Life, Letts, London.
  • Naylor, Paul (2003) Great British Marine Animals, Sound Diving Publications.

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Sabella pavonina: Brief Summary

provided by wikipedia EN

Sabella pavonina, commonly known as the peacock worm, is a marine polychaete worm belonging to the family Sabellidae. They can be found along the coasts of Western Europe and the Mediterranean. It is found in shallow, tidal waters with a bed of mud, sand or gravel. It is sometimes found on rocks or shipwrecks.

It is 10-25 centimetres in length. Its body is elongated and divided into 100-600 small segments. The head has two fans of feathery tentacles arising from fleshy, semi-circular lobes. The body is mostly grey-green while the tentacles are brown, red or purple with darker bands.

The worm lives inside a smooth tube of fine mud or sand particles held together with mucus. The tube stands upright with the lower end attached to stones and the upper end protruding from the sea bed. When covered by water, the worm extends its tentacles out of the tube to feed by filtering out small food particles. At low tide or when disturbed, it withdraws back into the tube.

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