The Ones We Trained

The United States Navy Marine Mammal Program was founded in 1960. It was classified as a black-budget program in 1967. It was formally declassified in the early 1990s, after which its existence, budget line, and operational doctrine became a matter of public record.1

It operates out of Point Loma, San Diego, under the Naval Information Warfare Center Pacific. At its peak it held roughly 140 marine mammals, primarily bottlenose dolphins and California sea lions.1

There are five operational teams, each designated by a mark number.

MK 4 and MK 7 hunt mines — tethered in the water column, buried in sediment on the sea floor. MK 8 identifies safe corridors for amphibious landings. MK 5 uses California sea lions to recover test equipment dropped from aircraft. MK 6 uses dolphins and sea lions to guard harbors and naval assets against unauthorized human swimmers.1

Each team can be deployed anywhere in the world within seventy-two hours, by ship, helicopter, C-17, or truck. Navy dolphins served in Vietnam from 1970 to 1971, in Bahrain from 1986 to 1988, and in the Persian Gulf in 2003, where they helped clear more than a hundred anti-ship mines and booby traps from the port of Umm Qasr.1

What an MK 6 dolphin actually does when it detects an unauthorized diver: approach from behind; bump a device into the back of the swimmer’s air tank; the device is attached to a surface buoy; the buoy explodes, alerting the human handlers. A sea lion, on the same mission, carries a cuff in its mouth and attaches it to the swimmer’s leg.1

The dolphin is not the weapon. The dolphin is the delivery system.

A bottlenose dolphin brain weighs roughly 1.6 kilograms. A human brain weighs roughly 1.4. In absolute mass they are comparable; adjusted for body size, the dolphin’s encephalization quotient is about 4.5, the second-highest of any species on Earth. The great apes score between 2.2 and 2.5.2

Von Economo neurons — the spindle-shaped cells linked to social cognition, empathy, and self-awareness — were long believed to be unique to humans and great apes. They are present, in greater numbers and different distribution, in bottlenose dolphins, killer whales, and humpback whales. They appear in the cetacean lineage roughly fifteen million years before they appear in ours.2

There are five known species on Earth that can recognize themselves in a mirror: humans (after about eighteen months of age), chimpanzees, orangutans, elephants, and bottlenose dolphins.2 Magpies may be a sixth. Almost nothing else passes the test.

Orca pods carry dialects, hunting traditions, and diet preferences that are transmitted matrilineally across generations. These are not behaviors. They are cultures.2

In 1963, the neuroscientist John C. Lilly opened the Communication Research Institute on the island of St. Thomas, in the U.S. Virgin Islands. It was funded by NASA and by the U.S. Navy’s Office of Naval Research. The astronomers Frank Drake and Carl Sagan, among others, considered the work a terrestrial rehearsal for eventual contact with non-human intelligence elsewhere in the galaxy. They called themselves the Order of the Dolphin.3

In 1965, a young research assistant named Margaret Howe Lovatt flooded the upper floor of the lab with two feet of seawater and moved in with a young male dolphin named Peter. She slept there six nights a week. She taught him, across several months, to produce an approximation of the phrase Hello Margaret. He worked hardest on the M.3

When the funding collapsed in 1966, Peter was transferred to a smaller tank in a disused bank building in Miami. Lovatt did not go with him. A few weeks later, she received a phone call from Lilly.

Lilly’s phrase, in that call, was that Peter had committed suicide.3

The United States is not alone. Since the 1960s, the Soviet Navy, and later the Russian Navy, has operated a parallel marine-mammal program out of Kazachya Bukhta, near Sevastopol on the Crimean Peninsula. After the fall of the Soviet Union, the unit was briefly operated by Ukraine. In 2014, during the Russian annexation of Crimea, it was captured intact and returned to Russian control.4

In February 2022, as the full-scale invasion of Ukraine began, commercial satellite imagery from Maxar Technologies showed two floating dolphin pens installed at the entrance to Sevastopol harbor, sheltering the most valuable Russian Black Sea Fleet warships from underwater sabotage.4

In the Arctic, at a facility called Olenya Guba, the Russian deep-sea intelligence directorate known as GUGI maintains beluga whales and seals instead of bottlenose dolphins. The colder water requires the insulation.4

In 2019, a beluga wearing a harness labeled Equipment of St. Petersburg arrived in Norwegian waters. The local fishermen freed him. They named him Hvaldimir. He lived among them as an oddity for five years, never fully returning to the wild, never fully returning to whoever had trained him, until his body was recovered in 2024.4

Consider what the protocol actually is, stripped of uniform and budget line.

An intelligence arrives in a domain it cannot fully inhabit. It identifies, within that domain, a species it recognizes as cognitively adjacent — capable of learning, capable of recognition, capable of transmitting knowledge to its young.

It captures members of that species and places them in enclosures they cannot leave. It trains them using a reward structure they experience as their own desire. It sets them to tasks that serve the arriving intelligence and not themselves: guarding objects whose purpose the trained species cannot comprehend, defending weapons whose scale the trained species cannot measure.

It does not tell them what they are guarding. It does not tell them why. It absorbs their casualties as operational cost. It retires the survivors into smaller enclosures at the end of their usefulness.

Occasionally one of them notices. It stops eating. It stops breathing. It defects.

This arrangement is sixty-six years old in the United States. It is older than that in the Soviet archive. It is, as arrangements between species on this planet go, entirely normal.