Original study2026Read the paper →
Some veterans living with posttraumatic stress disorder struggle to feel safe, relaxed, or connected to other people after military service. An exploratory project in Hawaii is examining whether structured encounters with dolphins could offer a useful addition to their existing support.
The project involves student veterans and a partnership between National University and Dolphin Quest, with a researcher from Arizona State University as a co-investigator. An ASU announcement published on 6 November 2026 describes participants’ experiences and the measurements being collected, rather than presenting a completed clinical trial.
During the pilot in October 2026, participants attended three sessions involving roughly 30–45 minutes with dolphins each time. Activities included feeding and touching the animals, practising movement and stillness, and reflecting through journalling and group discussion.
A mental health counsellor was available on site. The group format was intended to provide a sense of shared experience as well as time with the animals, so the programme involved several elements beyond the dolphin encounter itself.
Researchers are assessing heart rate variability, the changes in timing between heartbeats, alongside surveys of positive and negative emotions. They are also examining participants’ written reflections to understand how the sessions were experienced.
Those measures may help describe physical and emotional responses around the encounters. They do not by themselves establish recovery from PTSD, and changes in a physiological measure should not be treated as proof that a condition has been successfully treated.
Participants described feeling calmer, more open, or more willing to trust during the sessions. Such accounts can help researchers decide what to examine next, but they cannot determine whether improvements persist or whether another supportive group activity would produce similar experiences.
The university announcement does not report the pilot’s sample size or completed numerical results. It also does not describe a randomised comparison with established treatment, a waiting group, or the same activities without dolphins.
That makes it impossible to separate the possible contribution of the animals from attention from staff, time in a new environment, group contact, or participants’ expectations. The account should therefore be understood as a report of research in progress, not evidence supporting a new treatment recommendation.
The researchers hope the findings will guide larger studies examining whether any benefits last and whether similar approaches could reach other veteran communities. The intervention is intended to complement existing care rather than replace established PTSD treatments.
Future work would need to specify who may benefit, how symptoms are assessed, and how safety and practical access are managed. A larger controlled study would also need to distinguish a pleasant or meaningful experience from a lasting improvement in symptoms and daily functioning.
For veterans considering additional support, the distinction is between an approach being investigated and one shown to work. The pilot gives researchers questions to test, while leaving the effectiveness of dolphin encounters for PTSD unresolved.
