In Canto Four of his poem John Shade (the poet in VN’s novel Pale Fire, 1962) lists the things that he loathes and, at the end of his list, mentions sharks:
Now I shall speak of evil as none has
Spoken before. I loathe such things as jazz;
The white-hosed moron torturing a black
Bull, rayed with red; abstractist bric-a-brac;
Primitivist folk-masks; progressive schools;