Dictionary of Ichthyology  

Headington shark = a 7.6 m model of a basking shark embedded head first in the roof of a house at 2 New High Street, Headington, Oxford. Said to represent an feeling of impotence, anger and desperation. Naturally controversial.

From Wikimedia Commons: http://en.wikipedia.org/wiki/File:Headingtonshark

Canadian Museum of Nature