The dolphins used to treat PTSD in Ukrainian soldiers

Trainers in Odessa say sessions can help veterans, as well as children with learning difficulties, but there are concerns about the animals' welfare

Ivan Golubev was a hyperactive child until his school in the Donbass region of eastern Ukraine was attacked by gunfire. The trauma left him unable to to speak.

A few months later he was on holiday in Odessa and his mother, Anna, decided to try dolphin therapy. "By the end of the first session he started talking again, and I just couldn't stop crying," she says, as her son splashes round in the pool as part of his follow-up treatment.