hiː ɐtˈɛmptᵻd tə dɪvˈɛləp ɐ fˈɔːɹm ʌv vˈɜːbəl kəmjˌuːnɪkˈeɪʃən bᵻtwˌiːn hjˈuːmənz ænd dˈɑːlfɪnz, bˌʌt ᵻvˈɛntʃuːəli tɹˈaɪd tə dɪvˈɛləp ɐ sˈɪɹiz ʌv hˈænd sˈɪɡnəlz.
He attempted to develop a form of verbal communication between Humans and dolphins, but eventually tried to develop a series of hand signals.