In the modern era, the difference between sea mine and drone or torpedo can be a lot fuzzier than you may expect. People think of spikey balls, but some sea mines today can do stuff like use passive sonar to match targets against an internal database before firing a homing torpedo. I doubt Iran has these, but they certainly have the proficiency to think creatively about the problem.

> I doubt Iran has these

According to guys in the know, they have quite the hardware:

https://www.hisutton.com/Iranian-Naval-Mines.html