Shark (n.)
'1560s, of uncertain origin; apparently the word and the first specimen were brought to London by Capt. John Hawkins's second expedition (landed 1565; see Hakluyt). The meaning "dishonest person who preys on others," though only attested from 1599 ('sharker' in this sense is from 1594), may be the original sense, later applied to the large, "voracious marine fish".'
'1560s, of uncertain origin; apparently the word and the first specimen were brought to London by Capt. John Hawkins's second expedition (landed 1565; see Hakluyt). The meaning "dishonest person who preys on others," though only attested from 1599 ('sharker' in this sense is from 1594), may be the original sense, later applied to the large, "voracious marine fish".'