Allseas designed a diffuser system to slow discharged sediment flow. Over 95% of the sediment stays within the gravity current near the seabed.

USGS finds some deep-sea sulfide rocks can heat up and catch fire. Marcasite-rich Escanaba Trough samples combusted during lab processing.

TMC dropped box core samplers at hundreds of sites on the seafloor. Each core lifted a square meter of seabed to count nodules and sediment life.