Minutes passed. The male shifted his hold a little. The female moved her triangular head, pivoting it slightly from left to right. Through his glass Stephen could see her sideways jaws open and close; then there was a blur of movements so rapid that for all his care and extreme attention he could not follow them, and the male’s head was off, clamped there, a detached lemon, under the crook of her green praying arms. She bit into it, the eye’s glow went out; on her back the headless male continued to copulate rather more strongly than before, all his inhibitions having been removed. ‘Ah,’ said Stephen with intense satisfaction, and noted down the time again.

Master and Commander – Patrick O’Brian