Two floating islands were built last month in the Civic Center lagoon, but if you’re getting images of Dubai in your mind we recommend shaking those thoughts. The islands are actually placed there to act as biofilters, with plantings on the surface and roots in the water to provide natural water filtration and wildlife habitat. The project was launched during the 2014 Bioneers conference. “We are so pleased to be demonstrating this innovative, completely green approach to improving the water quality in our most local watershed here at the Civic Center,” says Marin District 1 Supervisor Damon Connolly. While the idea isn’t novel — similar projects have been launched in Walnut Creek and Marysville — it’s had favorable outcomes.