“The long-term goal is that these castles get covered with oysters and barnacles and a lot of other marine life,” says Schrading. “So once we’ve created this foundation, more and more marine life will continue to grow on it and it will be a self-sustaining reef system. That’s the key – you can build this and then walk away and have it be self-sustaining, versus constantly going in every 5 or 10 years to rebuild the structure.” Photo: Steve Droter