interesting question, just try to ggole it.

regards

Rianna,

Please check the following useful link and PDF attachment.

https://www.researchgate.net/profile/Sabine_Sonnentag

Good luck

Rianna

Sorry for pasting wrong link in my previous post. Please follow the link  with three more useful PDF attachments for your perusal.

https://www.hindawi.com/journals/jmb/2012/807294/

Kindly check..

http://www.conservationmagazine.org/2014/08/how-can-whale-shark-tourism-be-kept-sustainable/

See here too..

More info..

http://www.conservationmagazine.org/2014/08/how-can-whale-shark-tourism-be-kept-sustainable/

Check also..

http://www.environment.gov.au/node/15911

More to see..

http://www.sharksavers.org/en/education/the-value-of-sharks/sharks-and-ecotourism/

Also to be seen..

http://www.deepseanews.com/2012/08/whale-shark-ecotourism-the-good-the-bad-and-the-ugly/

Please read the following article.

Whale watching in Sri Lanka: Perceptions of sustainability

Whale watching creates an economic value for whales beyond consumption and therefore assists in the conservation

of the species. However sustainable management is needed to avoid deleterious impacts on the whales

and the industry. This paper uses a range of qualitative methods to examine the characteristics, management

and perceived sustainability of the relatively newly established whale watching industry in Sri Lanka. It is clear

that the laissez faire development of the industry has resulted in some poor conservation outcomes for the

whales as well as variable tourist experiences. The Sri Lankan government has introduced legislated regulations

aimed at managing the industry however itmust ensure adequate human and financial resources are provided to

ensure the effective implementation of the regulations and therefore the sustainability of the industry

http://www.sciencedirect.com/science/article/pii/S2211973616300137