 Because of this, information of recent deep-water volcanic eruptions are still incomplete and limited.The conclusions of the studies of subaqueous volcanoes in Japan determine that clear evidence for eruption and/or emplacement of pyroclastic flows continue to be determined from the examination of these deposits although inferential evidence such as grain morphology, sorting and grading can be used to identify and document ancient subaqueous volcanic deposits.The University of California, Santa Barbara will continue to conduct further research which may be able to provide further information on styles of subaqueous volcanic eruptions and/or flow characteristics of volcanic deposits.