Detailed Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Problem:Sea urchins feed mainly on algae , but can also feed on sea cucumbers , and a wide range of invertebrates such as mussels , polychaetes , sponges , brittle stars and crinoids .
Solution:
Sea urchins feed mainly on algae , so they are primarily herbivores , but can feed on sea cucumbers and a wide range of invertebrates , such as mussels , polychaetes , sponges , brittle stars , and crinoids , making them omnivores , consumers at a range of trophic levels .