Tourists from New Zealand, Spain, France, Germany and the Netherlands are thought to be among those rescued after a boat reportedly hit a reef in bad weather during the three-day journey in Indonesia.
While two Britons were among the survivors, the fate of the other 15 people on board, thought to be of various nationalities and reportedly including four Indonesian crew members and Indonesian guide, is not yet known.
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An attacker armed with a machete killed a woman and wounded two others in the southern German city, according to reports.
A swimmer has gone missing and two others were rescued by the coast guard after they got into trouble in the sea at Camber Sands.
Hundreds joined the party for Jerika Bolen, 14, who has decided to come off life support and allow herself to die later this year.