Can dolphin watching tours be sustainable?

Whale watching is an international industry worth more than 2 billion US$ globally and it is currently the greatest economic activity reliant upon cetaceans. However, there is concern that whale watching is detrimental to the target species. Numerous studies have shown that cetaceans exhibit behavioral changes in response to whale-watching boat traffic. Some of these behavioral changes involve inhibiting biologically important behaviors such as feeding and resting. There is convincing evidence for some species that these can translate into population-level effects such as reduced reproductive rates (Parsons et al., 2012). We work in close cooperation with the dolphin watching company Progetto Natura. Is this a mistake? I summarize below all the reasons why Progetto Natura dolphin watching tours can be considered absolutely sustainable and not detrimental to the dolphins' welfare.  

 

Although it is not required by italian law we totally respect the international code of conduct of ACCOBAMS  (Agreement on the Conservation of Cetaceans in the Black Sea Mediterranean Sea and Contigous Atlantic Area): 

  • - The commercial operation should not have any discernable adverse effect on the behavioural patterns of the cetacean.
    This is the way we approach the animals: once spotted the group, the vessel reduces the navigation speed and watch from afar its behavior. If it is sure that dolphins are not engaged on a primary function (feeding, reproduction), the vessel approach them at a speed of 2-3 knots at maximum, remaining at a distance no closer than 50 m. If the response of the animals to our presence is neutral (no interaction with the boat and maintaining of the group's activities) or positive (spontaneous interaction with the boat), the permanence with the animals never exceed 30 minutes; if the answer is rather negative (avoidance, displacement) the group is immediately left.

 

  • - The dolphin watching activities should not conflict with the conservation, management, or protection of the cetacean concerned.
    The bottlenose dolphins in the Mediterranean waters is not considered at risk but it is vulnerable to a range of threats linked to human activities (pollution, habitat degradation and over fishing), At the actual state of the arts dolphin-watching is not considered as a threats for the conservation of this species (reference: Conserving whale, dolphin and porpoise in the Mediterranean and Black Sea, Di Sciara and Birkun, 2010).

 

  • - The dolphin watching operator, and the operator’s staff who may come in contact with cetacean, should have sufficient experience with cetacean.
  • The staff who runs the dolphin watching tours has academic and professional qualifications. 

 

  • - The commercial operation should have sufficient educational value to participants or to the public.
  • 45 minutes of the tour are dedicated to explain biology, ecology, conservation status of cetaceans in the Mediterranean sea. Particular attention is devoted to explaining how each of us, in his daily life, can help in reducing the impact of human activities on the health of oceans and sea creatures. Thanks to the presence aboard of the researchers of MareTerra no profit organization, partecipants can learn the techniques of scientific monitoring, with which researchers seek out and study these elusive animals. Thanks to the technique of photo-identification adopted on board the guests can know details about the observed individuals (sex, age, site fidelity, health status). At the end, through the use of acoustic equipment, participants can listen to the dolphin sound, finding out how this species communicate.  

 

  • - The commercial operation, when possible, facilitate the collection of scientific data and ultimately the publication of these data in a useful form.
  • The dolphin watching tours are a platform of opportunity for the collection of scientific data. The founders of Progetto Natura are also the founding members of MareTerra Onlus - Environmental Research and Conservation, no profit organization which is engaged in the study and conservation of bottlenose dolphins in the northern Sardinia (in collaboration with the University of Sassari and the University of Palermo). Collecting data on cetaceans in the wild can be a difficult and expensive task due to the often complex logistics, equipment and staffing requirements. Therefore, by involving whale/dolphin watch passengers in science, it is possible to contribute towards scientific research and, at the same time, raise awareness. These two fundamental activities (scientific research and public awareness) would not be possible without the financial support from the dolphin watching tours.

 

  • - The vessel has be judged appropriate for whale watching.
  • The boat of Progetto Natura was built specifically for dolphin watching, trying to minimize the potential impact on the animals:
  • 1.The boat is small in size (10 m) and carries only 12 people. This allows us to maneuver it with confidence and agility, while minimizing the disturbance on animals.
  • 2. The engine is latest-generation and low-chemical and acoustic emissions. Furthermore the engine compartment was isolated to reduce the noise transmitted into the water.
  
General consideration  The severity of commercial whale-watching's long-term impacts on cetacean populations remains uncertain, and there is concern that in focussing so much effort in this area that larger threats are being ignored. On a local scale, private and other commercial (e.g., sightseeing, scuba) vessels repeatedly violate regulations and can vastly outnumber dedicated whale-watching vessels, thus being a greater source of disturbance than the commercial operators on which we focus (Kessler and Harcourt, 2013). The disturbance created by whale-watching vessels, in terms of noise and collision risk, may be small in comparison to disturbances resulting from other shipping or tourist activities (New et al, 2015).

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