When this Paris canal was drained, they discovered something hiding beneath the water

From Roasted.com:
http://www.roasted.com/article/30895189/when-this-paris-canal-was-drained-they-discovered-something-hiding-beneath-the-water?param4=roa-ysa-us-de-lifestyle¶m1=354570120&s=4

Rico says they hate surprises...