Noah and the Flood: Salt water vs. Fresh water

Recently, in our Wednesday Night Youth Group, we have been discussing Genesis 6-9 regarding Noah, the Ark, and the Flood. One of our students asked a question about salt water vs. fresh water and its impact on fish/aquatic animals. Here is an article that speaks to that exact issue:

https://answersingenesis.org/the-flood/how-could-fish-survive-the-genesis-flood/