Whale watching boats typically use a combination of methods to locate whales. These may include: Spotting Techniques: Experienced crew members and guides scan the horizon with binoculars to search for signs of whale activity such as spouts, breaching, or fluke dives. Marine Wildlife Observations: Whales are often found near other marine wildlife, such as seabirds or dolphins. Crew members may look for these indicators to narrow down potential whale sightings. Hydrophone Technology: Some boats use hydrophones, which are underwater microphones, to listen for the sounds of whale vocalisations. This method can help locate whales that are not visible at the surface. Local Knowledge and Communication: Whale watching operators often have extensive local knowledge of whale migration patterns and feeding grounds.