The Dolphin Ear DE500 underwater listening device. Eavesdrop on your marine neighbours from the comfort of your sofa with this GSM phone remote monitoring device. Just right for checking your lobster pots, eh? $695.00.
DolphinEar ‘500’…is a combination of hydrophone, pre-amplifier and mobile telephone interface. It plugs into the accessory connector of any handheld mobile telephone and allows the user to dial up and listen to the hydrophone from any telephone in the world…Any standard low cost digital phone (such as GSM, PCS, CDMA, etc.), or older style analogue phones, may be used. It does not require a special data connection. The user simply dials the telephone number of the hydrophone to initiate a monitoring session.