Depthline uses sonar data to build real-time 3D maps of underwater cave systems — giving recreational divers the visibility and confidence to explore safely.
From real-time sonar mapping to dive planning, Depthline gives you the full picture before you descend.
Our proprietary sonar integration builds detailed 3D cave profiles as you dive. See passage widths, depth changes, and obstacle locations rendered in real-time on your display.
Explore interactive 3D maps of cave systems before you enter the water. Rotate, zoom, and plan routes through fully rendered passages.
Plot your entry, waypoints, and exit with distance and depth markers. Share routes with your dive buddy in one tap.
AI-flagged restrictions, silting zones, and low-visibility areas appear on your map before you encounter them.
Access thousands of crowd-sourced cave maps from divers around the world. Contribute your own scans and help expand the most comprehensive underwater cave atlas ever built.
Depthline was born from a simple frustration — the underwater caves that divers explore are among the most complex and beautiful environments on Earth, yet the mapping tools available were outdated and incomplete.
We're combining modern sonar technology with intuitive software to give every recreational diver the ability to understand, navigate, and share the hidden world beneath the surface.