The biggest search for the Loch Ness Monster in five decades is under way in the Scottish Highlands. Researchers and enthusiasts from around the world are gathering to track down the elusive creature through drones with thermal scanners, boats with infrared cameras, and an underwater hydrophone. Alan McKenna of Loch Ness Exploration explained their goal was simply to study natural phenomena and unusual behavior.

Thermal scanners are expected to detect anomalies in the depths of the lake. The hydrophone will also make it possible for them to hear underwater sounds similar to Nessie. Measuring 23 miles long with a maximum depth of 788 feet, Loch Ness is the United Kingdom's biggest lake by volume.

Centuries ago, notes of the existence of Loch Ness Monster appeared as early as AD 565 while recent sightings and investigations have tried to reveal its mystery which often led into arguments and speculations.

Despite more than 1,100 recorded Nessie sightings, many attempts to prove the creature's existence have produced mixed results. The legend plays a large role in Scotland's tourism revenue, however.

Multiple theories and studies over the years have attempted to explain the phenomenon. While some believe in the possibility of a prehistoric marine reptile or huge fish, searchers so far haven't conclusively nailed down which monster is responsible.

A current search looks to employ creative methods that provide an unprecedented opportunity for exploration at echelons never before seen, Paul Nixon from Loch Ness Centre said Friday. This weekend's efforts could reveal new vistas on an enduring tale.