ðɪs mˈeɪ biː kəntɹˈæstᵻd wɪð sˈʌbeɪkwˌɪəs ᵻvˈɛnts ɔːɹ fˈiːtʃɚz loʊkˈeɪɾᵻd bᵻlˌoʊ ɐ wˈɔːɾɚ sˈɜːfɪs, sˈʌbmɚɹˌiːn ᵻvˈɛnts ɔːɹ fˈiːtʃɚz loʊkˈeɪɾᵻd bᵻlˌoʊ ɐ sˈiː sˈɜːfɪs, sˌʌbtɪɹˈeɪniən ᵻvˈɛnts ɔːɹ fˈiːtʃɚz loʊkˈeɪɾᵻd bᵻlˌoʊ ɡɹˈaʊnd, ɔːɹ sˈʌbɡleɪʃəl ᵻvˈɛnts ɔːɹ fˈiːtʃɚz loʊkˈeɪɾᵻd bᵻlˌoʊ ɡlˈeɪʃəl ˈaɪs sˈʌtʃ ɐz ˈaɪs ʃˈiːts.
This may be contrasted with subaqueous events or features located below a water surface, submarine events or features located below a sea surface, subterranean events or features located below ground, or subglacial events or features located below glacial ice such as ice sheets.