Tuesday 19 June 2018

Salt & Fresh Water

The fish fossils at Canowindra are all of freshwater fish.

Generally fish are adapted to either a fresh or a saltwater environment. Salt water is more dense than fresh so buoyancy is different.

Osmotic pressure is different in salt and freshwater. That means that if a freshwater fish were put in salt water its body cells would tend to lose water so it couldn't survive for long.



No comments:

Post a Comment