Microscopic forms that live suspended in the water column (phytoplankton) provide the food base for most marine food chains.
mˌaɪkɹəskˈɑːpɪk fˈɔːɹmz ðæt lˈaɪv səspˈɛndᵻd ɪnðə wˈɔːɾɚ kˈɑːlʌm fˈaɪɾəplˌæŋktən pɹəvˈaɪd ðə fˈuːd bˈeɪs fɔːɹ mˈoʊst mɚɹˈiːn fˈuːd tʃˈeɪnz.