Messages in the Sand: 12 Great Guerrilla Ads at the Beach & the River

International Fund for Animal Welfare, Rapp UK, Great Britain

200 life-sized cardboard Hawksbill sea turtles invaded Bournemouth Beach in Dorset, England, placed in the sand by animal welfare activists. The International Fund for Animal Welfare (IFAW) commissioned the advertising agency Rapp UK to pull off the campaign, which sought to raise awareness of the impact wildlife souvenir trading has on endangered species.

Shadow WiFi Creates Shade for Skin Cancer Awareness

An oversized wifi router offered free internet connections to anyone on the Playa Agua Dulce beach in Peru – as long as they were within the shadow it casted onto the sand. The Shadow Wi-Fi system by Happiness Brussels was launched in collaboration with the Peruvian League Against Cancer to encourage people to stay out of the sun.

Giant Seashells for the Seafood Festival

Inside these gigantic seashells scattered all over a beach were not monstrous clams, as much as that might delight some seafood lovers, but instead invitations to check out a local seafood festival. Clever.

Submerged Billboard for ‘The Day After Tomorrow’ Movie, New York City

This isn’t a real ad, but maybe it should have been. It looks like an enthusiastic fan saw a missed opportunity to promote the movie ‘The Day After Tomorrow,’ photoshopping a billboard into the water along with the top of a building in the background. Well played, but at the same time, it’s probably a good thing companies can’t just stick billboards in the water whenever they want.