A 'boomer' in the Persian Gulf?

Recent news reveals OBiden's Navy has made a show of having a ballistic missile submarine in the Persian Gulf.

https://www.yahoo.com/news/us-general-rare-visit-nuclear-000330709.html

Anyone got a clue as to how many mines there are in the Persian Gulf?  Old moored mines floating deeper now and less visible to sonar due to marine growth on the case?  Unmoored mines?  

The countless old style 'contact horn' mines laid in WWI are still dangerous.  So are the ones from the 1980s dumped into the Gulf.

Do you really think the Navy of today - that runs into submerged mountains - has complete knowledge of the disposition of the mines deployed by Iran in the 'tanker wars' or Iraq during the Gulf War?   

Amazing example of decision making in today's Navy.   If nothing bad happens a 'diverse' crew will get their achievement medals.  

But - if one of these touches the midsection ... 

UPDATE: Same day - interesting background story from three years ago.  

https://www.propublica.org/article/iran-has-hundreds-of-naval-mines-us-navy-minesweepers-find-old-dishwashers-car-parts