The ocean, covering about 70% of Earth's surface, remains largely unexplored and represents an important frontier for technological innovation. About 95% of its volume lies below 200 meters--the deep sea--an extreme environment averaging 3,700 meters in depth and defined by high pressure, low temperature, and darkness. These unique conditions offer principles that can inspire new technologies. This seminar introduces "deep-sea-inspired chemistry," a framework that draws on functional strategies found in deep-sea environments and organisms. I will also highlight three technologies with strong industrial relevance: baroplastics, functional polymers that melt under pressure and enable low-energy plastic processing; MAGIQ, a hydrothermal-vent-inspired process for continuous nanoemulsion production; and SPOT, an advanced nanosensing platform capable of quantifying trace biomass degradation. These examples show how deep-sea concepts can open new pathways in next-generation nanotechnology.