Complex sentence: Four other species of hammerhead sharks overlap in range with the smalleye hammerhead, the small-sized scoophead and bonnethead and the large-sized scalloped hammerhead and great hammerhead; there is little competition between these species because of their differing habitat and dietary preferences.
Split into simpler sentences: Four other species of hammerhead sharks overlap in range with the smalleye hammerhead: the small-sized scoophead and bonnethead, and the large-sized scalloped hammerhead and great hammerhead. There is little competition between these species because of their differing habitat and dietary preferences.