Taking it a step further, being an ocean dwelling creature could even be an advantage in space since they would more easily be shielded from radiation if they w

Taking it a step further, being an ocean dwelling creature could even be an advantage in space since they would more easily be shielded from radiation if they were enveloped in a large mass of water and g-forces might be easier on their bodies since they'd be less compressible. But on the other hand: https://www.smithsonianmag.com/smart-news/fish-dont-do-so-well-space-180961817/ https://www.smithsonianmag.com/smart-news/fish-dont-do-so-we...