Riftia
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Riftia is a monotypic genus of polychaete annelid worms in the Siboglinidae family, which contains the sole species Riftia pachyptila, commonly known as the giant tubeworm or giant beardworm.
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The red branchial plumes are supported by the white obturaculum, which also seals the tube when the worm retracts itself.
Riftia pachyptila being extracted out of its tube
Riftia on the Eastern Pacific Ridge, 2,630 m (8,630 ft) depth
Polychaete
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Polychaeta is a paraphyletic class of generally marine annelid worms, commonly called bristle worms or polychaetes. Each body segment has a pair of fleshy protrusions called parapodia which bear many
Riftia
…Riftia is a monotypic genus of polychaete annelid worms in the Siboglinidae family, which contains the sole species Riftia pachyptila, commonly known as the giant tubeworm or giant beardworm…
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Pharynx eversion in Phyllodoce lineata
The plumes of a feather duster worm are known as radioles
The Pompeii worm lives at great depths by hydrothermal vents at temperatures up to 80 °C (176 °F).