Clerke Reef at Rowley Shoals is showing widespread effects of coral bleaching from the marine heatwave last summer. Yachtie Jim Miles sent ABC Kimberley underwater footage taken this week of the reef and said it was a "shock" to see so much alage covered, dead coral. "Everywhere we jump in the water, it's really horrific - it's the worst I've seen so far," Jim Miles, who's spent spending months sailing from Queensland back home to WA, said. "The fish life is also less." Last summer brought the l