osmosis | Southern Fried Science

The importance of being Aquaman, or how to save the Atlantean from his briny fate

Posted on October 26, 2017 by Andrew Thaler

This is an update and repost of our follow-up article on the science of Aquaman, revised and expanded.

Aquaman has an unpleasant lunch. From New 52 Aquaman #1 DC Comics.

Yesterday, I challenged you to consider how the greatest hero in the DC Universe would fair if forced to survive in the real world. The result was a hypothermic, brain-dead lump of jerky with brittle bones, forced to suffer through constant screams of agony even as he consumes sea life at a rate that would impress Galactus. In short, the ocean is a rough place, even for Aquaman.

But this is Southern Fried Science, and we’re not here to trash the greatest comic book hero of all time without offering some solutions, too. I went back to my comic books and my textbooks to assemble an Aquaman with a suite of evolutionary adaptations that would allow a largely humanoid organism to rule the waves, trident triumphantly raised.

Essential assumptions

Many people commented that Aquaman is not human, he is Atlantean, and thus is not bound by human limitations. This is wrong on at least two counts. First, in most iterations, Aquaman is half-human, which means that Atlanteans must be similar enough to humans, both physiologically and evolutionarily, to produce a viable hybrid. While there may be some minor differences between us and the children of Atlantis, functionally speaking, we’re the same. Second, these are not issues that plague only humans. Whales get the bends, amphibians freeze to death, fish need to regulate their internal osmolality. These are the problems inherent in being alive in the ocean, Atlantean or otherwise.

The horrifying physiological and psychological consequences of being Aquaman

Posted on July 18, 2012 by Andrew Thaler

Aquaman. DC Comics. A rational response to seal poaching is to lob a polar bear at the aggressors.

Aquaman may not be everybody’s favorite superhero, but since his creation in 1941, he has been among DC’s most enduring icons. During the Golden Age of comic books, he held his own against Superman, Batman, and Wonder Woman. Silver Age Aquaman was a founding member of the Justice League. His powers, tied to the ocean, forced writers to create a compelling, complex hero with explicit limitations. In the early days, when Superman’s strength was practically infinite, and Batman’s brilliance was unmatched, Aquaman had to become more than just a superhero, he had to be a person.

If Superman existed to show us how high the human spirit could fly, and Batman to show us the darkness within even our most noble, Aquaman is here to show us the world that triumphs in our absence. The ocean is not ours, and no matter how great our technology, we will never master it as we have mastered land, but Aquaman has. Through this lonely ocean wanderer, we can experience a world that we can never truly command. In many ways, Aquaman was stronger than the Man of Steel and darker than the Dark Knight. He knew loneliness that the orphan and the alien exile never could.

Roll on, thou deep and dark blue Ocean – roll!
Ten thousand fleets sweep over thee in vain;
Man marks the earth with ruin – his control
Stops with the shore; — upon the watery plain
The wrecks are all thy deed, not does remain
A shadow of man’s ravage, save his own,
When for a moment, like a drop of rain,
He sinks into thy depths with bubbling groan,
Without a grave, unknell’d, uncoffin’d, and unknown.

Byron

Even though Aquaman had to fight harder, endure the jokes of other, less limited heroes, and find relevance in an ecosystem hostile to the humans that had to empathize with him, Aquaman was never forced to confront the truly horrifying consequences of life in the ocean.

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Urea and Shark Osmoregulation

Posted on November 15, 2010 by David Shiffman

One of the challenges inherent in a marine lifestyle is in maintaining an internal balance against external osmotic pressures. Cell membranes are permeable to water, and water tends to flow from areas of low ion concentration to areas of high ion concentration (which is called ‘osmosis’). Though the cell is incredibly complex, from an osmotic perspective it is basically a small sack of water with some ions in it. If cells aren’t isosmotic (i.e. containing the same concentrations of ions) to the surrounding environment, then water will flow across a cell membrane. Depending on the relative ionic concentration of the cell to the environment, water may flow either into or out of a cell. Either way, this water flow is bad for the organism and may result in cells shriveling up or bursting.

Image from PhSchool.com