In a new study published in China Welding, researchers have optimized pulse frequency in local dry underwater laser welding (LDU-LW) of Q355B steel. The optimized pulsed laser process significantly improves weld formation, mechanical properties and corrosion resistance, offering a reliable solution for underwater repair and manufacturing of marine engineering structures.

A new, consolidated checklist of diatoms—a major group of photosynthetic microalgae—has been compiled for the Salish Sea, northeast Pacific, by a team of Canadian scientists. Integrating historical records with new reports, this first comprehensive baseline establishes a foundation for assessing diatom diversity in the region. As primary producers at the base of marine food webs, diatoms are key indicators of environmental change, providing critical insight into the health and resilience of the Salish Sea bioregion. The checklist is now published in the open-access Biodiversity Data Journal.

Ultrasonic tracking in Hiroshima Bay shows that male and female black sea bream move differently during the spawning season, offering a novel discovery into the reproductive behavior of a broadcast-spawning sparid fish in the wild.