Aliwal Shoal has an abundance of soft corals, sponges, and hiding places. These have combined to attract over 1200 species of fish, as well as turtles, rays, sharks and Hump Back Whales. Aliwal Shoal has stunning marine life and is a very popular diving destination especially for its abundance of Ragged Tooth Sharks (or otherwise known as Raggies, Sand Tiger or Grey Nurse Sharks) in the mating season between August and November.