Algae

A company called Saola is turning algae into wearable and environmentally friendly shoes. The company has figured out that they can harvest algae biomass from freshwater lakes and rivers, and make a lightweight, flexible, durable foam from it – ideal for footwear.

Not only does Algae Foam clear harmful algae from polluted waterways, but each pair re-circulates 240 bottles of filtered water back into natural habitats and prevents the equivalent of 13 balloons full of CO2 from being released into the Earth’s atmosphere. That's why they use algae for their recycled shoes.