They are most common in Newfoundland to Virginia, in North America, Northern Europe, Norway, and Iceland to south of France. Due to their living environment, N. Virens experiences greater fluctuations in water salinity (Marine Species Identification Portal and Biology and UNT Biology Course 4506 2013). Phascolopsis gouldii, a spiunculid worm, is an animal that belongs to phylum Sipuncular and class Sipunculidea. They are introvert animal, about one-third of the trunk length. P. gouldii are equipped…
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