• Scientists have begun an unprecedented exploration of the depths of the Indian Ocean.
• The expedition will delve into one of the last major unexplored frontiers on the planet.

An unprecedented mission to explore the depths of the Indian Ocean near the Seychelles Islands and document changes taking place beneath the waves began its research on Thursday.

The British-led Nekton Mission arrived off the tiny atoll of Alphonse in the early morning hours, after looming bad weather forced a change of plan and of route.

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