deep water

"But this is rather deep water, and the biggest ships can sail there."

In the 1940s, Congress authorized construction of a deep water channel that connected the community with Suisun Bay.

It added that the attack occurred in "deep waters outside of the designated swimming area".

Instead, anglerfish achieved high levels of phenotypic disparity, greater than their benthic relatives in both shallow and deep waters.

You use the deep water where you're not impacting any other species around the planet.