Complex sentence: The tiger catshark is a sluggish predator whose diet encompasses a diverse array of benthic organisms, dominated by bony fishes and crustaceans but also including cephalopods, polychaete worms, smaller sharks, and scavenged fish offal.
Split into simpler sentences: The tiger catshark is a sluggish predator of a diverse array of benthic organisms. Its diet is dominated by bony fishes and crustaceans, and also includes cephalopods, polychaete worms, smaller sharks, and scavenged fish offal.