Radar satellite data reveals 19,000 previously unknown undersea volcanoes
PhysOrg, April 23, 2023
[phys.org]

The open access paper is:

Gevorgian, J., Sandwell, D.T., Yu, Y., Kim, S.S. and Wessel, P., 2023. Global
distribution and morphology of small seamounts. Earth and Space Science,
10(4), p.e2022EA002331.
[agupubs.onlinelibrary.wiley.com]

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)