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"We know that there's a lot of questions floating about and we don't have all the answers, but we want to tell everybody that we're grieving," he added.

Ice shelves are floating platforms of ice where glaciers extend out into the ocean.

With repairs complete, crews with the Los Angeles Department of Water and Power were refilling the reservoir last week when they discovered further tears and “pinhole sized leaks” in the floating cover.

Earlier on Sunday, a helicopter spotted a father and son floating in the water near Wattamolla Beach, south of Sydney.

Initially, these microscopic specks look like little more than space dust floating around the ether until they form almost human shapes.