In 2002, the NZAPLUME II expedition surveyed a further 550 km of Kermadec arc reaching as far up the arc as the Kermadec islands. Again, the scientists found many of the volcanoes were host to hot springs, typically at the volcano summits, with 9 of 13 volcanoes surveyed venting hot plumes into the ocean.

The NZAPLUME III expedition of Sept/Oct of 2004 is the culmination of several years work with the mapping of the final part of the Kermadec arc within New Zealand's Economic Exclusive Zone up into Tongan territorial waters. This will then join on to the segment mapped during the Australian 2002 TELVE cruise meaning that approximately 1,800 km of arc has been systematically surveyed for hydrothermal venting.

In Oct/Nov of 2004 the Japanese research vessel Yokosuka with its deep diving submersible Shinkai 6500 will dive on two of the Kermadec volcanoes, Brothers and Healy. Then, in March/April of 2005, the American research vessel the Ka'imikai-o-Kanaloa with its deep diving submersible Pisces V, will also dive on several of the Kermadec volcanoes.