Reports of an aquatic monster lurking in Loch Ness date back to ancient times, with stone carvings in the area depicting a mysterious beast with flippers. Stretching 23 miles (36 kilometres) and with a maximum depth of 788 feet (240 metres), the freshwater loch is the UK's largest lake by volume. The hydrophone will allow the searchers to listen for unusual Nessie-like underwater calls.
The searchers believe the thermal scanners could prove crucial in identifying any strange anomalies in the murky depths.
