Whale watching is the practice of observing whales and dolphins in their natural habitat. Whale watching is mostly a recreational activity, but it can also serve scientific and/or educational purposes. Whale watching generates $2.1 billion per annum in tourism revenue worldwide, employing around 13,000 workers. The size and rapid growth of the industry has led to complex and continuing debates with the whaling industry about the best use of whales as a natural resource.
Based on the definition found on Wikipedia: https://en.wikipedia.org/wiki/Whale_watching