What is osmoregulation?
Q: What is osmoregulation?
A: Osmoregulation is how living things keep the right amount of salt and water in their bodies.
Q: Who does osmoregulation?
A: All living things do this, from bacteria to humans.
Q: What are regulators and conformers?
A: Regulators actively do things which act to keep their internal water at a standard level of saltiness, while conformers match their environment.
Q: How do sea fish maintain osmotic pressure?
A: Sea fish tend to gain salt if they live in seawater, so they actively put out (excrete) salt from their gills.
Q: How do river fish maintain osmotic pressure?
A: River fish take the salt out before they excrete water.
Q: Are there any animals that can adapt to both fresh and salt water environments?
A: Yes, some fish like the flounder can live in both fresh and salt water at different stages in its life and adapt accordingly.
