Activity Report

2025 Summer Observation Campaign off Sanriku #5

Posted: 2025.06.24

The Shinsei-maru had been in fog for the past two days, but the sky suddenly cleared in the evening.

Inside the vessel, a scientist was banging a plastic bag with a ruler. When we first heard the sound, we thought, “Is he making hamburger at high speed?!” Actually, he was dissolving an isotope of nitrogen (15N) in the seawater.