1) Peanut worms 2) Phylum 3) Phylum sipuncula 
The Sipuncula or Sipunculida (common names sipunculid worms or peanut worms) is a group containing 144–320 species (estimates vary) of bilaterally symmetrical, unsegmented marine worms. Traditionally considered a phylum, they might be a subgroup of phylum Annelida based on recent molecular work. == History == The first species of this phylum was...
[n] - peanut worms
phylum Sipuncula noun peanut worms