Allow me to throw in my two cents regarding cetaceans and marine shows. I've been to SeaWorld Orlando many times, and in recent years, they've shifted their animal shows to be more educational as well as entertaining. The trainers explain how the behaviors that their tricks exhibit are meant to be a form of enrichment that stimulates the natural behaviors that they don't really use in captivity. They need to motivate them to stay connected to their natural behaviors which are often expressed in hunting or interacting because the alternative would just be swimming around all day for no reason. They train them ethically as well, never abusing them. To quote the old metaphor, they always use the carrot to get the mule to move and never the stick.
I don't want to get into a lengthy debate here and I don't doubt that Seaworld have improved in an attempt to address the massive controversy of Blackfish (whether you agree with it's conclusions or not) but if your information is coming from Seaworld then as someone who has worked in zoos and falconry centres I will be blunt and say that any for-profit animal collection has a very strong incentive to, at least over-emphasise the good aspects of their animal husbandry and hide the less savoury aspects. I should know because even when working for what I considered to be generally good collections I did the same. Not to say that the handlers are being intentionally dishonest (I wasn't, i was ignorant and lied to myself as much as anything).
Couple of anecdotes to illustrate:
1. I was volunteering as part of my gap year in South Africa on various humanitarian and animal based projects and for about a month I was working at a lion safari and education centre which happened to also breed white lions. Most of the lions were kept in safari conditions but a number of cubs were fostered because their mothers rejected them and at between 8 weeks and 4 months they would be part of a petting area where guests could pay extra to enter and play with the cubs. I had a wonderful time feeding and bonding with some of those cubs but I was uncomfortable right from the start with the set up - even highly social animals that are raised by humans aren't exactly naturally used to strangers coming in, waking them up and touching them all day. I'd never be party to anything like that again and in hindsight it becomes obvious that there were a suspiciously high number of lionesses 'rejecting' their cubs. Worse though was the white lions where I heard, at least surface level believed, then recited the propaganda of the organisation which was that the white lions were a naturally occuring genetic trait
and that the organisation worked hard to keep the population genetically diverse and healthy. I got really attached to a triplet of white lion cubs of about 3 months old, one of which had a birth defect in the form of a kink in their tail. By the time I left 2 of them were dead - they died suddenly and with almost no explanation and I found out that this was a pretty regular 'but natural' problem.
2. A less blatant but more insidious problem; when working for a falconry centre when I was still a teenager we used to do flying demonstrations at various agricultural shows, schools etc. We'd have a stand where we would talk to the public at times when we weren't flying the birds. A couple of years in to my job our boss decided to start charging people who wanted to hold the birds at these shows and have their picture taken. It was a nightmare - before that when we'd allowed the public to hold the birds when we wanted to and felt they were comfortable and relaxed it had been an excellent opportunity to get people close eagle owls and hawks. Once we started charging and people had queued up with the expectation of being allowed to get near the birds it suddenly introduced huge pressure on us to keep the birds 'working' even when they were hot, or tired or stressed. To be fair the policy lasted less than a couple of months before we raised some of the issues with the boss and he was fine with us going back to the post-demo sessions being at our discretion and getting to hold the birds on the glove being a privilege not a right. The point being that the very act of monetising guest experiences that demand particular behaviours from animals is problematic.
None of this means Seaworld is evil and I think if we have to keep cetaceans in captivity should be kept stimulated but I much prefer the 'Edinburgh Zoo' style model where the penguins that march out of their enclosure do so if they want to with no food reward to force their engagement with the public.
Also none of this means that they shouldn't be in Planet Zoo (although I have many gameplay / mechanics concerns that mean I don't really want them). I just wanted to share my experiences to caution you that these organisations will lie to you, often they will be lies of ommission, 'white lies' and they may not even think they are lying because they'll deliberately avoid engaging with evidence that contradicts their position. This doesn't even make them wrong necessarily but statements like 'they need to motivate them to connect to their natural behavious' sound like the sort of crap I used to spout before I knew better by doing a degree in animal welfare.
Apologies for the long message!
