Euryhaline

Euryhaline is a big word that means something can live in different amounts of saltiness in water. Imagine if you were a fish and lived in a tank of water. Some fish can only live in water with a little bit of salt, while others can live in water with a lot of salt. Fish that can live in both types of water are euryhaline. It's like being able to eat different types of food, some people only like one type of food while others like many types of food. Similarly, euryhaline fish like different types of water!