Mauritius measures reef hoping to lay claim on Chagos Islands
Dispute over archipelago in Indian Ocean involves neighbouring Maldives and UK historical claim
Under a glaring sky, Mauritian survey teams set off in two tender boats to measure Blenheim Reef on Sunday morning.
A line of breakers marked the outer line of the atoll. An inflatable, carrying two Swedish marine experts retained by the Mauritian government, found an entrance through submerged rocks and surf into calmer water inside.