News Finding: The researchers found as long as the levels remained above 0.5 percent, the sponges could survive.
Paper Finding: Therefore, the oxygen requirements of sponges might be relatively low .
News Context: When oxygen levels dropped to zero, some died. The researchers found as long as the levels remained above 0.5 percent, the sponges could survive. "There must have been other ecological and evolutionary mechanisms at play.
Paper Context: Because these cells are always in direct contact with seawater, they do not rely on the diffusion of oxygen from the external environment into the interior of the animal, nor do they require oxygen delivery via a true circulatory system. Therefore, the oxygen requirements of sponges might be relatively low . Sponges were also observed on the Volcano 7 seamount in the eastern tropical Pacific, where oxygen concentrations ranged from 4.5 to 7.2 μM O 2 .