The US-Iran war has been marked by setbacks for Washington, with the White House struggling to wrap up the conflict, which it initially said would take "four or five weeks".
Iran's 'mosquito fleet', a flotilla of small, fast, modified boats, has been a surprise threat in the conflict, capable of attacking and keeping the maritime area near the Strait of Hormuz in check.
The 'mosquito fleet' is controlled and deployed by the IRGC, which has dedicated focus to building a range of these designed small boats, coupled with miniature submarines and marine drones.
The nimble boats can reach speeds of up to 100 knots or 185 kilometres per hour and are too small to appear on satellite images, making them difficult to track.
The US and Israel have managed to attack half of the IRGC's navy's fast attack boats, but estimates suggest hundreds to thousands of such boats still remain.
The boats are parked within deep caves excavated along rocky Iranian coasts, and can be deployed in matter of minutes, posing a threat to commercial vessels near the Strait.
