For a while ago a volcanologiest from Dunedin in New zealand contact me after seen my blog about the ”Tonga to New zealand crossing”. He was very curious about the pumice rocks we picked up and got washed up on Misty during the sailing. Big fields of pumice rocks was floating around us during most of the crossing. All sizes from very small, up to the size of a coconut. I sent a bunch of samples to the volcanologiest and he later replied:
”The rafts you saw were products of a large under water eruption, at Le Havre seamount, in July 2012. I am tracking the still-floating rafts with satellite images; it works pretty well, but only for large rafts, so it is important to know when the first pumice arrived at Tonga, or whether any pumices arrived to NZ coasts, for example. You can get information about the eruption at:
If I have had known that these pumice rocks were so important for some scientists, I had collect buckets of them!