Nokta Makro Simplex+ DOES IT WORK IN SEAWATER? Metal Detecting Underwater

All targets found at the same day, same area in saltwater. We are snorkeling while detecting. Settings on SIMPLEX: - Parkmode - G/B - Iron volume 1 bar - Not discrimination, the first and 2 last ones. - Frequency shift F3 - Sensitivity 4/6 - Volume full. No headphones The white tape you see attached to the detector is because the water is very cold and I trying to prevent a leak in case the iron shrinks. Probebly not, but just for safty. Equipment I use: Nokta Makro SIMPLEX Garrett PRO-POINTER