How marine mammals stay hydrated in a salty sea0

• Animals, Ask Us Anything, Conservation, Environment, Ocean, SCIENCE, Whales, Wildlife
• March 18, 2026

Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. Over the long and complicated course of evolutionary history, mammals independently turned towards water to make a home multiple times. While many of the warm-blooded animals that abandoned dry land for a watery habitat no longer exist, we still