The Heavenly King Red Snail, also known as the Florida MacConck Snail, is a highly predatory sea snail found in subtropical and tropical regions. They are the largest gastropod class in American waters. The shell length of the Tianwang red spiral snail is 60 centimeters. The shell is shuttle shaped and has a long siphon tube with up to 10 spirals. The shell of the juvenile is bright orange and turns gray white to salmon orange as it grows, with a light yellow brown or dark brown stratum corneum. The Tianwang red spiral snail is preyed upon by other large marine predators, including the left-handed fragrant snail, queen phoenix snail, and bone snail genus. They also have same-sex cannibalism. In the aquarium, they also eat small hermit crabs.