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OCEAN TURTLES |
Reptiles have less effective kidneys than vertebrates and they can't deliver pee with a higher salt fixation than the seawater they drink. To try not to harm themselves with salt development, ocean turtles have an organ in each eye that effectively siphons salt particles into their tears. They need to run these organs persistently to keep up the right equilibrium of salt in their bodies.
We partner crying with egg-laying since that is the lone opportunity they come aground, yet they cry in the ocean too. The tears likewise help flush sand from their eyes.