Until now, the US-Iran conflict has largely unfolded in the skies, but it is shifting to a far more complex and risky maritime phase. The US Navy faces the challenge of enforcing a blockade on Iranian ports, aiming to choke off vital oil revenues while monitoring every vessel and route. Iran, however, can respond with fast boats, missiles, and especially sea mines - silent, hard-to-detect weapons that threaten key chokepoints like the Strait of Hormuz. Clearing them is slow and dangerous, relying on advanced underwater drones, as the US balances enforcement with rising global and military risks.