A breeding colony of 60 million fish has been discovered in Antarctica's ice-covered Weddell Sea - a unique and previously unknown ecosystem that covers an area the size of Malta.

The biggest iceberg in the world, known as A23A, is on the move for the first time in 40 years. After being grounded on a shoal for decades, the massive berg broke free last week.

The largest free-standing aquarium in the world, which housed about 1,500 exotic fish, burst on Friday morning in Berlin, Germany, flooding public streets with water, debris and dead marine life.