This easy recipe for pan-seared mahi-mahi with a lime marinade makes a perfect warm-weather dinner. When you want something quick, easy, and deliciousin other words, you dont want to sweat in a hot kitchenthis dish works just as well on the grill. Mahi-mahi is a species of dolphin fish, though it should not be confused with the delightful mammal dolphin that dances on the water on its tail, chattering away. In fact, this is a fish that was always called dolphin until the hawaiians decided they had to differentiate between the two species. At that point, they renamed the edible fish (non-mammal) version mahi-mahi. These fish are native to tropical and subtropical waters. They're at their best in may, although they're availableand very goodfrom mid-spring through late summer.