[Hakahura]

Note wrong Rose they sure can. I never use the thing, its a sure way of getting detected. You just have to hope for the best when you dive in shallow water. I also think they can hear you if you hit the bottom. I've had them come after me like that even before I've ordered full astern to drag myself out the mud.

Of course one option is to dive slowly in increments if your not sure of the depth, and use the extenal cam. But I think some people might call that cheating.