 It prefers rocky reefs, mats of seaweed, and seagrass beds.The crested bullhead shark is a slow-moving, nocturnal species often seen wedging its head between rocks in search of food.It feeds primarily on the sea urchins "Centrostephanus rodgersii" and "Heliocidaris erythrogramma", but has also been known to take a variety of other invertebrates and small fishes.