I’m going to tell you the pros and cons about marine animals in captivity and my opinion about it. Food deprivation is still alive and well by the way, but the industry doesn’t like to admit that, but there really is no way to control a dolphin without food. This question has been heavily debated for decades. Marine mammals do breed in captivity, but the birth rate in captivity is not as successful as in the wild. Marine mammals do breed in captivity, but the birth rate in captivity is not as successful as in the wild. Perhaps it is time to start publicly talking about this fact and acknowledging it. My first reason for wanting marine mammals to be kept in captivity is when they are out in the wild they are killed by poachers for their body fat and other natural resources they supply, or caught in fishing nets, etc. Often the excuse used for keeping animals in captivity for human amusement is that they aren’t very smart. Not only are they lesser beings who are not entitled to rights, the argument goes, but they also probably aren’t aware of their captivity. For this reason, when a baby dolphin is born into captivity its birth is usually kept a secret from its mother until it shows signs of survival. The importance of keeping certain wild animals in captivity is underscored by the viral stardom of a rescued baby sea otter named Luna and the problems the documentary "Blackfish" created for For example, according to the World Society for the Protection of Animals, a dolphin in the wild swims 40 miles per day, but US regulations require dolphin pens to be only 30 feet in length. Captivity of Marine Mammals The concern that is being presented is that of whether we should allow marine parks to stay open has been extensively debated in our community of late.It is a significant issue due to the fact that it concerns deep-seated moral and economic questions about the utilization of our native wildlife.There have been an extensive range of different arguments being pushed to the … I recently read several articles about marine animals in captivity and I also watched a documentary called Blackfish about an orca in captivity. For this reason, when a baby dolphin is born into captivity its birth is usually kept a secret from its mother until it shows signs of survival. Research disagrees. Often the excuse used for keeping animals in captivity for human amusement is that they aren’t very smart. It’s not possible. This is not to say that marine mammals suffer more in captivity than small fish, although that is possible, the suffering of marine mammals is more obvious to us. I agree with people who believe marine mammals should be kept in captivity. Marine mammals breed very poorly in captivity with very high infant death rates. Marine Animals in Captivity. The reasons for not keeping marine mammals in captivity are numerous.