Whale watching is a valuable conservation tool but unregulated or poorly managed operations cause significant welfare harm to whales and dolphins through vessel disturbance and harassment.
Whale watching welfare harms are cumulative and population-level. Individual cetaceans repeatedly approached by vessels experience repeated acute stress. Humpback whale calves separated from mothers by vessel approach are particularly vulnerable. Dolphins entrapped by vessel formations cannot surface normally, causing respiratory stress. Long-term habituation to vessel noise may impair foraging efficiency. Responsible whale watching with minimum approach distances, engine-off periods, and strict time limits per individual significantly reduces these harms. Consumer choice of certified operators with IFAW or national responsible standards drives improvement across the industry.