Iran is considering deploying dolphins equipped with naval mines against U.S. warships in the Strait of Hormuz, according to a report by The Wall Street Journal, as tensions intensify between Tehran and Washington following a sustained blockade on Iranian oil exports.
The proposal, attributed to Iranian officials familiar with internal deliberations, reflects a broader escalation debate inside Iran, where hardline factions increasingly view the U.S. strategy as direct warfare rather than economic coercion. The idea of weaponizing marine mammals is being discussed alongside more conventional military options, including submarine deployments and threats to undersea communications infrastructure.
Iran's internal calculus appears shaped by mounting economic strain and battlefield developments since February, when the United States and Israel launched coordinated air operations against Iranian targets. Tehran responded with missile and drone strikes targeting Israeli territory, U.S. military installations, and allied Gulf states, triggering a cycle of retaliation that has disrupted maritime traffic across the region.
Shipping through the strategic corridor has been sharply reduced since late February, with a parallel U.S. blockade of Iranian ports beginning in April effectively creating what analysts describe as a "dual blockade" of the waterway. The choke point remains central to global energy markets, carrying roughly one-fifth of the world's petroleum and liquefied natural gas supply.
Hamidreza Azizi, a visiting fellow at SWP in Berlin, told The Wall Street Journal that the shift in Tehran's posture is becoming more pronounced. "The blockade is increasingly viewed in Tehran not as a substitute for war, but as a different manifestation of it... Iranian decision makers may soon come to see renewed conflict as less costly than continuing to endure a prolonged blockade," he said.
The dolphin proposal, while unusual, is rooted in Cold War-era military experimentation. After the collapse of the Soviet Union, a dolphin training program originally operated near Sevastopol was transferred to Ukraine and later sold to Iran, according to reporting by the BBC. The program historically trained dolphins for tasks including mine detection, diver interception, and, in extreme cases, explosive delivery missions.
What remains unclear is the operational status of those animals and whether Iran has maintained or advanced such capabilities. No independent verification exists regarding the current condition or deployment readiness of any Soviet-era marine assets transferred to Tehran decades ago.
Military use of dolphins is not without precedent in the region. The U.S. Navy deployed trained dolphins in the Persian Gulf during the late 1980s to detect mines and guard vessels during the Iran-Iraq War. More recently, U.S. forces have shifted toward autonomous systems, deploying sea drones designed to locate and neutralize underwater threats in the same contested waters.
In addition to the dolphin concept, Iranian officials are reportedly evaluating options that include:
- Deploying submarines into congested shipping lanes
- Targeting undersea telecommunications cables crossing the strait
- Expanding asymmetric naval tactics through the Islamic Revolutionary Guard Corps
Such measures, analysts warn, could have consequences far beyond military confrontation. Disruptions to undersea cables could impact global internet traffic, while further destabilization of shipping routes could amplify volatility in already strained energy markets.
Retired U.S. Admiral Tim Keating previously noted that marine mammals could theoretically be used in mine detection operations in the region, underscoring the enduring-if controversial-military relevance of such programs.
With roughly 3,000 vessels passing through the Strait of Hormuz monthly before the conflict, the stakes surrounding any escalation remain acute, particularly as unconventional tactics enter strategic discussions on both sides.
