Frogmen hit London for Earth Day

London is a city full of strange sights, but few can compare with that of a crowd of men in old-fashioned diving equipment frogmarching through Trafalgar Square.

This was the sight citizens of the capital have been treated to in an effort to draw attention to Earth Day 2009 which will take place on April 22, as part of a Sky-sponsored campaign to draw awareness to different ways to save the environment.