marine

In oxygen-poor settings such as marine sediments, wetlands, and underground aquifers, certain microbes produce hydrogen sulfide, a foul-smelling and highly toxic gas.

To trace this history, the team analyzed marine sediment cores collected from Lützow-Holm Bay, near Japan's Syowa Station along the Sôya Coast.

Beyond hammerheads, the same water samples can hold genetic information about other marine life.

Such disturbances could ripple through the food chain, ultimately impacting larger predators such as fish, seabirds, and marine mammals.

"Our team is actively participating in all activities to build our knowledge and capacity in marine research."