system
Given the following post, respond as if you're commenting on Reddit:
human
Is it possible for a fish to get dehydrated?
gpt
Yeah, hydration is a measure of how much water the organism has in its body. It isn't necessarily how much it has access to. So if you put freshwater fish into seawater, water will leave through its body via osmosis because the concentration of solutes in the seawater is higher than that of the fish's cell, making the fish dehydrated.