A fishing reel according to an embodiment of the present disclosure is configured to include a spool capable of winding a fishing line, an operation portion that winds the fishing line, a fishing line unwinding commencement detector that detects the commencement of the unwinding of the fishing line by the fishing reel, and an unwinding interval measuring portion that measures a time interval between the commencement of the unwinding of the fishing line and the commencement of the next unwinding of the fishing line.