Photo by Arthur Evans You’ve heard that coral reefs are in big trouble and might ... Which is why Courtney Mattison’s sculpture is so vital: It plunges you into that hidden realm.

The "coral defenders" are made of plastic called PHA. Similar to a potato starch, it naturally breaks down when exposed, ...

he says. In Grenada, the location of his sculptures draws attention to a reef badly damaged by Hurricane Ivan in 2004, where natural renewal of the coral has been greatly hindered by global warming.

Coral curator Christina Jayne discusses how coral pyramids will be outplanted at two sites as a restoration and enhancement ...