peanutworm

Encyclopedia

peanutworm

any member of the invertebrate phylum Sipuncula, a group of elongated, often spindle-shaped, unsegmented marine worms. The head usually has one or more rings of tentacles. Peanutworms vary in length from a few to 500 millimetres (1.6 feet) or more in length. Though rare, they may be locally common on seabeds throughout the oceans of the world. Peanutworms are bottom-dwelling (benthic) animals; most burrow in the mud or sand between tide levels or in oozes of the deepest ocean trenches. Some species have other habitats and live in discarded mollusk shells, in sponge siphons, in corals, among the twisted tubes of encrusting polychaetes (marine annelid worms), and even in tangled roots of marine plants.

Learn more about peanutworm with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Explore Dictionary.com
Previous Definition: peanuts
Next Definition: pear
Words Near: peanutworm
More from Thesaurus.com
Synonyms and Antonyms for peanutworm
More from Reference.com
Search for articles containing peanutworm
More from Dictionary.com Translator
Dictionary.com Word FAQs

Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.

Related Searches
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature