Complex sentence: The shark is less convincing--it includes artistic details not found in sharks, such as forward-facing eyes and lips--while not identifiable as any specific species, it is still clearly recognisable as a shark.
Split into simpler sentences: The shark is less convincing--it includes artistic details not found in sharks, such as forward-facing eyes and lips. While not identifiable as any specific species, it is still clearly recognisable as a shark.