Blue oysters are good for you because they're high in zinc and vitamin B12. Zinc is essential for a healthy immune system, and vitamin B12 is important for red blood cell formation and energy production. Blue oysters are a good source of protein, omega-3 fatty acids, and selenium. Selenium is an antioxidant that helps protect cells from damage caused by free radicals. So overall, blue oysters are a nutritious food choice that provides various health benefits.