Following the announcement of our 11–14-year-old semi-finalists, we are excited to spotlight the remarkable students selected as semi-finalists in the 15–19-year-old category of the 2026 Science Without Borders® Challenge. Their artwork demonstrates not only artistic talent but also a deep understanding of the science behind this year’s theme.

This year’s theme, “Microscopic Marine Life,” challenged students to explore the hidden world of ocean microorganisms and illustrate how these tiny organisms support life throughout the marine environment. Although invisible to the naked eye, microscopic marine life plays a critical role in maintaining ocean health—from producing oxygen and forming the base of marine food webs to recycling nutrients and regulating the planet’s climate.