Lobsters are a superfood containing lean protein and omega-3 fatty acids that are beneficial for brain and heart health. They come in a variety of colors besides red, such as blue or yellow. In Maine, lobsters must be between 3 1/4 to 5 inches long to legally catch and sell. The northern lobster population is thriving while southern lobsters struggle with shell disease. Contrary to popular belief, lobsters do not mate for life and females can store sperm for two years before fertilizing their eggs externally.