Oh what up!
"Researchers first suspected that something might be strange about the opah after analyzing a sample of the fish's gill tissue. According to the new study, published today (May 14) in the journal Science, the blood vessels in the tissue are set up so that the vessels carrying cool, oxygenated blood from the gills to the body are in contact with the vessels carrying warm, deoxygenated blood from the body to the gills. As a result, the outgoing blood warms up the incoming blood, a process called counter-current heat exchange.
"There has never been anything like this seen in a fish's gills before," Wegner said in a statement. "This is a cool innovation by these animals that gives them a competitive edge. The concept of counter-current heat exchange was invented in fish long before [humans] thought of it."
I love how fat that fucking fish is, and how because it's a fatass, it's somehow faster. The ocean is backwards as fuh.