By Christina Newberry

Mexico has an abysmal plastic recycling program. Combine this with the fact that tourists and locals alike down bottled water in huge quantities, and the end result is literally tons of plastic heading into landfills.

This problem inspired Rishi Sowa, a British ex-pat living on the Mexican island of Isla Mujeres to create an ecologically sensitive way to re-use plastic, creating his own mini-ecosystem in the process. The result is Spiral Island.

Anchored in Makax Lagoon, the 20-metre island is built on a base of 100,000 floating plastic bottles. With a house that includes a fully functional kitchen and bathroom, and even an office space with solar- and wind-powered laptop station, Sowa sees the island as a model method for making housing out of trash.

Sowa lives on the island full time and offers tours on a donation basis.

Our tour started with a short ride from the dock to the island on a hand-built raft-style boat, which is also made from plastic bottles. As we stepped down on to the island, Sowa warned us that it wouldn't quite feel like terra firma – the floating bottles give the entire island a little bit of bounce. Once we had our island legs, Sowa explained how he's using quick-growing mangroves and other plants to stabilize the island, clean the air, and generally help to minimize the damage done by all the plastic we consume.

As we walked around the island, Sowa showed off his prototype for a wave- and solar-powered clothes washing system – just one of his island inventions. Another neat trick is the tin-can-style telephone he's made using conch shells, so visitors in what will eventually be an upstairs guest bedroom can call down to the kitchen for breakfast. The shower and taps are conch shells, and the toilet is a self-composting system that uses woodchips to neutralise odours and germs.

Solar panels on the island generate enough electricity to power Sowa's laptop, lights, and kitchen appliances. He ended the tour by sharing some of his home-made island ice cream.

The island in Mexico is Sowa's second attempt at plastic-bottle island living. The first Spiral Island, anchored near Puerto Aventuras, lasted for seven years before being destroyed by a hurricane. With the new island tethered in a more sheltered lagoon, Sowa hopes it can become a permanent installation, and then become a model for economically and ecologically sound housing for and society that has water nearby or suffers from flooding.

Seeing Spiral Island is one thing – but the real benefit of the tour is picking Sowa's brain. He's part mad scientist, part "eco-pioneer."

If you go:

Spiral Island is not a typical tourist stop, and you won't find it on any day-trip agenda. In fact, the island may have moved by the time you try to find it – when we were there Sowa was in the process of securing permission to move the island further from shore. (The island is licensed as a boat, and right now it's secured to a dock very close to land – close enough that his cat was able to escape through the mangrove roots and come back with kittens in her belly.)

For now, Spiral Island is anchored in Makax Lagoon, at a dock near the Dolphin Discovery pavilion. Your best bet to find the island if it's moved is to check in at the Pocna hostel (15 Matamoros Ave, Isla Mujeres), where one of the staff members should be able to direct you to it. Or, just stop by the Sunset Grill on North Beach (Av. Rueda Medina, Condominios Nautibeach) on a Sunday night and ask the guitar player – it's Sowa himself. After all, even an eco-pioneer has to earn a living.

All photos ©Christina Newberry