Is it crawfish or crawdad?

Crawfish” and “crawdad” both refer to the same animal—crustaceans that look like and are related to lobsters but are found in rivers, streams, swamps, and other bodies of freshwater.

Although there is a lot of overlap, the term “crawfish” is more popular in the southern parts of the United States, while “crawdad” is preferred in specific areas, such as North Carolina and Oregon.