Which Feature Does Not Characterize Marine Bony Fishes

Which feature does not characterize marine bony fishes?

A) They cope with ingestion of large salt loads by not absorbing certain ingested ions.
B) They osmoregulate such that their extracellular fluid is one-third to one-half the osmolarity of seawater.
C) They produce urine that is more concentrated than their extracellular fluid.
D) They excrete NaCl across gill membranes.
E) They minimize water loss by producing small amounts of urine.