'As Far As The Eye Can See': Mother-Daughter Duo Discovers Massive Coral Colony On Great Barrier Reef

February 27, 2026

A routine dive turned into a record-breaking moment for a mother and daughter exploring Australia’s Great Barrier Reef.

ABC News Australia / Biopixel: Richard Fitzpatrick

Sophie Kalkowski-Pope and her mum, Jan Pope, were diving offshore from Cairns while participating in Citizens of the Reef’s Great Reef Census when they stumbled upon something extraordinary — what scientists believe may be the largest coral colony ever recorded on the reef, and "possibly the largest in the world."

Stretching an astonishing 111 metres long, the massive Pavona clavus coral colony covers an estimated 3,971 square metres.

“It’s just these meadows of rippling coral as far as the eye can see,” Kalkowski-Pope said.

To put the size into perspective, she noted that other contenders for the world’s largest recorded corals include one off the Solomon Islands measuring 34 metres along its longest edge, and another in Nusa Penida that spans 71 metres across.

This newly discovered giant far exceeds both.

Despite the excitement, the pair are keeping the exact location private to protect the site. The discovery has been passed along to the Great Barrier Reef Marine Park Authority, which will oversee its monitoring and management.

The Australian Institute of Marine Science praised the find, with research scientist Mike Emslie estimating the coral colony to be “at least” a couple of hundred years old.

That means this underwater giant was already growing long before modern Australia existed — quietly expanding beneath the waves for centuries.