Most are phototrophic, although some are mixotrophic, deriving energy both from photosynthesis and uptake of organic carbon either by osmotrophy, myzotrophy, or phagotrophy.
mˈoʊst ɑːɹ fˌoʊɾoʊtɹˈoʊfɪk, ɔːlðˈoʊ sˌʌm ɑːɹ mˌɪksətɹˈoʊfɪk, dᵻɹˈaɪvɪŋ ˈɛnɚdʒi bˈoʊθ fɹʌm fˌoʊɾoʊsˈɪnθəsˌɪs ænd ˈʌpteɪk ʌv ɔːɹɡˈænɪk kˈɑːɹbən ˈiːðɚ baɪ ˈɑːzmətɹəfi, mˈaɪzətɹəfi, ɔːɹ fˈæɡətɹəfi.