Emergency underwater notification device

A notification device comprising:

• (a) an activator;
• (b) one or more primary signal emitters, said one or more primary signal emitters to each emit a primary notification signal upon activation of the activator;
• (c) one or more corresponding secondary signal emitters, said one or more corresponding secondary signal emitters to each emit a corresponding secondary communication signal in relation to said one or more primary signal emitters upon activation of the activator;
• (d) one or more receivers capable of receiving communication signals;
• (e) one or more corresponding tertiary signal emitters, said one or more corresponding tertiary signal emitters to each emit a corresponding tertiary communication signal in relation to said one or more primary signal emitters upon receipt by the receiver of either a corresponding secondary communication signal or a corresponding tertiary communication signal from another notification device;
• and
• (f) one or more corresponding quaternary signal emitters, said one or more corresponding quaternary signal emitters to each emit a corresponding quaternary notification signal in relation to said one or more primary signal emitters upon receipt by the receiver of either a corresponding secondary communication signal or a corresponding tertiary communication signal from another notification device.

An underwater notification device comprising:

• (a) an activator;
• (b) one or more primary signal emitters, said one or more primary signal emitters to each emit a primary notification signal upon activation of the activator;
• (c) one or more corresponding secondary signal emitters, said one or more corresponding secondary signal emitters to each emit a corresponding secondary communication signal in relation to said one or more primary signal emitters upon activation of the activator, said corresponding secondary communication signal employing a group identification signal to facilitate the selective response of a group of devices;
• (d) one or more receivers capable of receiving communication signals;
• (e) one or more corresponding tertiary signal emitters, said one or more corresponding tertiary signal emitters to each emit a corresponding tertiary communication signal in relation to said one or more primary signal emitters upon receipt by the receiver of either a corresponding secondary communication signal or a corresponding tertiary communication signal from another notification device, said corresponding tertiary communication signal employing a group identification signal to facilitate the selective response of a group of devices;
• and
• (f) one or more corresponding quaternary signal emitters, said one or more corresponding quaternary signal emitters to each emit a corresponding quaternary notification signal in relation to said one or more primary signal emitters upon receipt by the receiver of either a corresponding secondary communication signal or a corresponding tertiary communication signal from another notification device.