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 The column of Cereus pedunculatus is dark and trumpet shaped, with large, protuberant pale 'suckers' occurring towards the top. Column height is usually up to 12 cm. It is typically a flesh, buff or greyish colour at the base, shading to dark grey, brown or purplish at the top. The oral disc is wide, usually 3-7 cm but can be as wide as 15 cm. Cereus pedunculatus tentacles are short, banded and mottled, numbering between 500 and 1000, and arranged in multiples of six around the oral disc. Colouration in the oral disc and tentacles varies from pale buff to deep purple or black. Often paler around the mouth.Older specimens of Cereus pedunculatus have a broad central tentacle-free area on the oral disc. Cereus pedunculatus have very similar colouration to Sagartia species. However, the column of Sagartia species is not trumpet-shaped. Only the oral disc of Cereus pedunculatus is visible on soft sand or mud as the column is buried. There is often debris attached to the suckers on column.


Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

©  The Marine Biological Association of the United Kingdom

Source: Marine Life Information Network

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