I am doing a survey-based study about animals in captivity and professional opinion about the same. Data collected will be used and interpreted for my degree Honours project in Environmental Conservation, Bangor University. This is an anonymous survey that is targeting professionals in fields of Marine Biology, Zoology, Environmental Conservation, Veterinary Science and Animal care specialists as well as similar fields. The survey will take approximately 15 minutes and it is structured out of short, clear, simple to answer questions with question types such as yes/no questions, scales, and ranking as well as open ending questions. If you have a few minutes to spare and fill it in please do, feel free to ask your colleagues to do the same if they are interested. Thank you! https://szonyas.onlinesurveys.ac.uk/do-marine-mammals-in-aquariums-receive-m... Public opinion questionnaire surveys can experience several types of bias, which are proven by many previous studies (Wassermann et al. 2018). Survey for this study, therefore, focuses on surveying educated professional to determine whether bias can be spotted across different fields due to exposure to debates, animal welfare, and job-creation issues. Furthermore, this study will seek to see what opinion is shared when it comes to the improvement of the welfare of captive mammals.