Dinoflagellates (algal protists) are often endosymbionts in the cells of the coral-forming marine invertebrates, where they accelerate host-cell metabolism by generating sugar and oxygen immediately available through photosynthesis using incident light and the carbon dioxide produced by the host.
dˈɪnəflˌeɪdʒəlˌeɪts ˈælɡəl pɹˈɑːɾɪsts ɑːɹ ˈɔfən ˈɛndoʊsˌɪmbɪˌɑːnts ɪnðə sˈɛlz ʌvðə kˈɔːɹəlfˈɔːɹmɪŋ mɚɹˈiːn ɪnvˈɜːɾɪbɹˌeɪts, wˌɛɹ ðeɪ ɐksˈɛlɚɹˌeɪt hˈoʊstsˈɛl mətˈæbəlˌɪzəm baɪ dʒˈɛnɚɹˌeɪɾɪŋ ʃˈʊɡɚ ænd ˈɑːksɪdʒən ɪmˈiːdɪətli ɐvˈeɪləbəl θɹuː fˌoʊɾoʊsˈɪnθəsˌɪs jˈuːzɪŋ ˈɪnsɪdənt lˈaɪt ænd ðə kˈɑːɹbən daɪˈɑːksaɪd pɹədˈuːst baɪ ðə hˈoʊst.