[throwaway8503]

Something solid ahead

To clarify: I mean that, generally speaking, the presence of 'cloudy' water would presumably signify that the seafloor was close. In the open ocean, maybe a sea mount is surrounded by essentially a cloud of particles.

Edit: I think your reply made the thread reach maximum depth, so I'll end it here.. I should do more reading on the topic.

[iancmceachern]

The problem I'm highlighting is it also gets cloudy randomly in open ocean, for lots of other reasons.