Beaches are littered with fish carcasses and scientists warn they are only ‘the tip of the iceberg’ as underwater habitats deteriorateGet our breaking news email, free app or daily news podcastAnthony Rowland was heading out for a pre-dawn surf at Waitpinga Point when he felt a tickle in his throat.He was out on the pristine water as the sun rose on South Australia’s Fleurieu peninsula, then headed back up the hill towards the car park with his friends. “Halfway up, all three of us were barking,” he says.Sign up for Guardian Australia’s breaking news email Continue reading...