killer whale, killer, orca, grampus, sea wolf, Orcinus orca
['flatworm, platyhelminth', 'chambered nautilus, pearly nautilus, nautilus', 'ostrich, Struthio camelus', 'conch', 'scuba diver', 'bighorn, bighorn sheep, cimarron, Rocky Mountain bighorn, Rocky Mountain sheep, Ovis canadensis', 'cleaver, meat cleaver, chopper']