own/run a facility, a business degree/background will be best. To work at one, your bach will usually be enough - MAYBE a masters. Once you get into the industry, you'll see that 99% of what you need to know, you learn on the job. Usually, when hiring people with very high degrees are looked over for people with less (it's always assumed that higher degrees are going to ask for more pay, so managers don't even both looking when someone can do the same job cheaper). I hate to say that, but sadly it's 100% true.
And just a tagged on note: Once doing the job, you'll quickly see a harsh line between marine mammals and all other forms of aquatic life. They usually don't mix.