#Biodiversity150 number 147 of 150 Peanut worm

147/150: Nutty Facts about the Peanut Worm!

Animalia: Sipuncula: Phascolosomatidea: Phascolosomatida: Phascolosomatidae: Phascolosoma agassizii (Henri Marie Ducrotay de Blainville, 1827)

Peanut worms, also known as Sipunculids are marine worms in that typically dwell in shallow waters. Sipuncula means “little tube” or “siphon” in Latin and refers to the introvert of peanut worms, a long sensitive tube ringed with tentacles which they can extend to collect food. Since peanut worms have soft bodies, they usually burrow in mud, hide in crevices or shells, or even burrow into rocks to keep themselves protected. The introvert lets them hide their bodies while safely and comfortably searching around for food. Peanut worms are not very picky eaters, some species burrow in sand and eat whatever detritus they find, some are carnivorous, and some are specialized filter feeders straining food from the water around them. Peanut worms were once so plentiful that locals in Singapore used to feed them to ducks, however, like many species in the intertidal zone; they are threatened due to human encroachment in their habitats. There are 757 peanut worms with barcodes on BOLD. #Canada150 #Biodiversity150

Phascolosoma agassizii – Specimen PEB0211 – British Columbia, Canada – 17-Jun-2011. Photo Credit: Paige Borrett, DFO
Peanut worm, Phascolosoma agassizii with an extended siphon sitting in pebbles. Photo Credit: Robin Agarwal goo.gl/zgQ7tm
Colourful Peanut worm suspended in water. Photo Credit: Robin Agarwal goo.gl/QLMNtX

Here’s the barcode sequence information for this species:

Process ID: CAISN183-12

nucleotide sequence


amino acid sequence


Visual representation of DNA barcode sequence for Peanut worm

Learn more about it’s BIN (Barcode Index Number): BOLD:AAZ9881