Different types of pumice found on shorelines after the 2021 eruption, and attached biological species. (IMAGE)

Tokyo Metropolitan University

Different types of pumice found on shorelines after the 2021 eruption, and attached biological species.

Caption

 Different types of pumice found on shorelines after the 2021 eruption, and attached biological species.
From A to H, light-gray pumice, black pumice, brown pumice, gray-banded pumice, black-and-white-banded pumice, white pumice, pink pumice, and obsidian-bearing pumice. I, J, and K show goose barnacles, bryozoans, and coral. Scale bars in A-J are 50 mm; scale bar in K is 10 mm.

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Tokyo Metropolitan University

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