The number of young corals has fallen by 85 percent on tropical reefs and risen by about the same amount on subtropical reefs over the course of the past four decades.

Competing in total were 21 historic 12 Metres from six countries – the largest fleet ever gathered in North America.

The Port of Gdynia was baked in sunshine on Sunday night as the 409 sailors from 66 nations took to the city beach for the opening ceremony of the Hempel Youth Sailing World Championships.

Twenty-one historic 12 Metres from six nations are taking part – the largest fleet ever gathered in North America.

ruce Keen held his nerve to just beat title defender, Australia’s Jon Newman, who settled for second best.

A long wait in fading breeze did not distract Chris Bake’s crew from the job at hand, and they did enough to win in the two races were eventually sailed.

Many people, both inside and outside World Sailing, are unhappy that the introduction of new events means the loss of the Finn, Olympic Sailing's Blue Riband event.

Sandringham will be free of sludge in time for the 2020 Laser Worlds, a crucial qualifier for the 2020 Tokyo Olympics.

Title defender, Jon Newman (AUS), climbed up the leader board and into third overall, with one day of the Championship remaining.

Stand-out performer was Team Aqua, whose 2-5-2-1 scoreline has left her with a useful eight point advantage going into the final day.

The Grand Prix and Modern Divisions both saw extremely close racing that translated into slimmer margins on the scoreboard between first- and second-place positions.

Jock Calvert from Australia, who won the medal race at the World Cup in Genoa, is one of the favourites.

When there was still no wind at 1530, PRO Peter Reggio pulled the plug on racing for the day.

All five people were wearing life jackets and the two survivors were clutching onto the overturned catamaran when rescue crews arrived.

In Grand Prix Division, Legacy remains undefeated, ahead of New Zealand, Kookaburra II and Kiwi Magic.