Sentence:  The <WSD>whaler</WSD> shark family, which includes the grey reef shark ("Carcharhinus amblyrhynchos"),silvertip ("Carcharhinus albimarginatus"), bull shark ("Carcharhinus leucas") and bronze whaler ("Carcharhinus brachyurus") are fast moving, territorial and have bitten divers snd surfers in the past. 
Meaning of the word marked with <WSD> tags:  Any shark of the family Carcharhinidae; a requiem shark.