Man-made rock pools at San Diego Bay waterfront double as coastal defences

A group of geometric concrete blocks that mimic rock pools have been installed at San Diego Bay in California by eco-engineering company Econcrete to prevent flooding while providing habitats for marine life.
The project, named Coastalock, is a coastal defence system with textured and indented surfaces that encourage organisms to latch on colonise it.
It was designed by Econcrete as an alternative to traditional man-made flood defences that typically offer little or no value to underwater e