“The latest GEBCO Grid figure now stands at 23.4%, reflecting an increase of 10.1 million square kilometres of new bathymetric data compared with last year’s figure.”
The ocean covers over 70% of the planet, and three quarters of its floor still has no high-resolution map. Seabed 2030 added an area the size of Europe in one year. At that pace the 2030 deadline is fiction. We have better maps of Mars.