150 square kilometers of floating rock from a big volcanic eruption near Tonga.
Scientists say it could replenish the Great Barrier Reef.
Some of the stones are as large as basketballs, and have formed a giant sheet stretching about 58 square miles — nearly the size of Washington, D.C.
So, how does it “replenish?”
Scott Bryan, an associate professor at Queensland University of Technology, told the Australian Broadcasting Corporation the raft is floating towards Australia, and will hit the coast in about seven to 12 months. He says by that time, the raft will be "covered in a whole range of organisms of algae and barnacles and corals and crabs and snails and worms."
"Each piece of pumice is a rafting vehicle. It's a home and a vehicle for marine organisms to attach and hitch a ride across the deep ocean to get to Australia," Bryan told The Guardian.
A video and more @ Giant Pumice Raft Floating Toward Australia Could Help Replenish Great Barrier Reef
