World Hydrography Day is celebrated annually on June 21st. 

World Hydrography Day 2025 Quotes 

• “Hydrography is the foundation of safe navigation, marine safety, and the sustainable use of our oceans.” – International Hydrographic Organization
• “The sea, once it casts its spell, holds one in its net of wonder forever.” – Jacques-Yves Cousteau
• “The ocean stirs the heart, inspires the imagination, and brings eternal joy to the soul.” – Wyland
• “The tides are in our veins.” – Robinson Jeffers
• “Every drop in the ocean counts.” – Yoko Ono
• “From hidden reefs to safe harbors, hydrography maps the underwater world that connects us all.”
• “Charting the course for a sustainable future, one ocean depth at a time.”
• “Beyond the surface lies a world waiting to be explored. Hydrography lights the way.”
• “Precision beneath the waves, safety above. Celebrating the science of hydrography.”
• “Silent maps, powerful voices—hydrographers shape the unseen world beneath us.”