
Seagrasses are flowering plants that form dense underwater meadows in coastal waters worldwide, from the frigid seas of the Arctic to the warm shallows of the Caribbean. These meadows provide a refuge for young fish, food for grazing sea turtles and manatees, and help to slow climate change by absorbing carbon from the atmosphere up to 35 times faster than rainforests.
In a new study, we discovered another reason to preserve the world’s remaining seagrass meadows: they can build and maintain coral reef islands.